学生信息管理系统c语言版源代码
c语言学生管理系统代码
C语言学生管理系统代码
简介
学生管理系统是一个用于管理学生信息的简单程序，它可以实现添加学生信息、显示学生信息、修改学生信息和删除学生信息等功能。
通过这个系统，学校或机构可以更方便地管理和维护学生的相关数据。
功能
1.添加学生信息：通过输入学生的姓名、学号、年龄和性别等信息，将
学生信息存储在系统中。
每个学生信息包括学号、姓名、年龄和性别等关键信息。
2.显示学生信息：可以显示系统中所有学生的信息，包括学号、姓名、
年龄和性别。
3.修改学生信息：通过输入学生的学号，可以修改该学生的姓名、年龄
和性别等信息。
4.删除学生信息：通过输入学生的学号，可以删除该学生的信息。
实现
下面是一个简单的C语言学生管理系统代码示例：
```c #include <stdio.h> #include <string.h>
#define MAX_STUDENTS 100
// 定义学生结构体 struct Student { int id; char name[100]; int age; char
gender[10]; };
// 定义全局变量，用于存储学生信息和统计学生数量 struct Student
students[MAX_STUDENTS]; int num_students = 0;
// 添加学生 void addStudent() { if (num_students >= MAX_STUDENTS) { printf(。
学生管理系统c语言源代码
int main()
{
initLinkTable(&head);//初始化表头
readStu();//读入源文件
while (1)
{
menu();
system("cls");
}
}
void initLinkTable(studentLinkPoint *p)
int sum(studentLinkPoint);//求和
void avg(studentLinkPoint);//求平均分
void disAvgSum(studentLinkPoint);//显示总分和平均分
char *inputNumber();//专门用来输入一个学生的学号,返回该字符串的指针
char name[20];
char number[18];
int i;
if(temp==0)
{
error("input");
return 0;
}
else
{
temp->student=(studentPint)malloc(sizeof(studentNod));
break;
case 0:
del(head,end);
break;
}
if(c==0)
exit(1);
}
void del(studentLinkPoint p,studentLinkPoint End)
{
studentLinkPoint q;
if(end==head)
printf(" %3.1f %3.1f\n",p->student->sum,p->student->avg);
C语言课程设计——学生管理系统源代码
C语言课程设计——学生管理系统源代码#include<stdio.h>#include<stdlib.h>#include<string.h>#include<conio.h>#define MY1 printf("学号\t姓名\t性别\t年龄\t生日")#define MY2 printf("\n%d %6s %4s\t%2d %8d%2d%2d \n",s[i].num,s[i].name,s[i].sex,s[i].age,s[i].a.year,s[i].a.month,s[i].a.day)#define MY3 printf("家庭住址联系方式高数英语大物总成绩")#define MY4 printf("\n%4s %4s %2d %2d %2d %2d\n",s[i].address,s[i].tel,s[i].c.gao,s[i].c.ying,s[i].c.wu,s[i].c.total)#define MAX 30int i;int sum;/*时间结构体类型*/struct date{int year;int month;int day;}a;/*学生成绩结构体类型*/struct score{int gao;int ying;int wu;int total;}c;/*学生信息结构体类型*/struct s_message{int num;char name[20];char sex[5];int age;struct date a;char address[50];char tel [11];struct score c;}s[MAX];/*保存学生信息模块*/void save_message(int sum){int i;FILE*fp;if((fp=fopen("D:\\s.txt","wb"))==NULL){printf("reading file is wrong!\n");return;}for (i=0;i<sum;i++){if(fwrite(&s[i],sizeof(struct s_message),1,fp)!=1)printf("writing file is wrong!\n");}fclose(fp);}/*读取学生信息模块*/int read_message(){FILE *fp;int i=0;if((fp=fopen("D:\\s.txt","rb"))==NULL){printf("\n\n***********暂时无任何库存信息，按回车键进入主菜单选择基本信息的录入！***********\n");return 0 ;}while(feof(fp)==0){if(fread(&s[i],sizeof(struct s_message),1,fp)!=1) break;i++;}fclose(fp);return(i);}/*输入学生信息模块*/putin_message(){system("cls");int i=0,m=0;printf("\n\n***********输入学生信息****************\n\n");printf("输入要输入的学生的个数(m<MAX)\n");scanf("%d",&m);for(i=sum;i<sum+m;i++){ printf("\n\n第%d个学生的信息\n",i+1);printf("\n 学生学号:");scanf("%d",&s[i].num);if(s[i].num==0) break;printf("\n 学生姓名:");scanf("%s",s[i].name);printf("\n 学生性别:");scanf("%s",s[i].sex);printf("\n 学生年龄:");scanf("%d",&s[i].age);printf("\n 学生生日:");scanf("%d%d%d",&s[i].a.year,&s[i].a.month,&s[i].a.day);printf("\n 家庭住址:");scanf("%s",s[i].address);printf("\n 联系方式:");scanf("%s",s[i].tel);printf("\n 高数--英语--大物(成绩0-100):");scanf("%d%d%d",&s[i].c.gao,&s[i].c.ying,&s[i].c.wu);s[i].c.total=s[i].c.gao+s[i].c.ying+s[i].c.wu;flushall();}printf("\n***********************学生信息输入完毕**********************\n");sum+=m;printf("\n 按回车键返回主菜单！");getch();return 0;}/*输出学生信息模块*/void putout_message(){system("cls");int i=0;printf("\n*****************************学生信息表**********************\n\n");for(i=0;i<sum;i++){MY1;MY2;MY3;MY4;printf("\n\n");}printf("按回车键返回主菜单！");getch();}/*添加学生信息*/insert_message(){system("cls");int i=sum,flag=0;char choice;printf("\n\n**********添加一个学生信息***********\n");do{printf("\n 学生学号:");scanf("%d",&s[i].num);if(s[i].num==0) break;printf("\n 学生姓名:");fflush(stdin);scanf("%s",s[i].name);printf("\n 学生性别:");scanf("%s",s[i].sex);printf("\n 学生年龄:");scanf("%d",&s[i].age);printf("\n 学生生日:");scanf("%d %d %d",&s[i].a.year,&s[i].a.month,&s[i].a.day);printf("\n 学生家庭住址:");scanf("%s",s[i].address);printf("\n 联系方式:");scanf("%s",s[i].tel);printf("\n 高数--英语--大物(成绩0-100):");scanf("%d%d%d",&s[i].c.gao,&s[i].c.ying,&s[i].c.wu);s[i].c.total=s[i].c.gao+s[i].c.ying+s[i].c.wu;sum++;printf("\n 要继续吗？(Y/N)");choice=getch();if(choice=='y'||choice=='Y'){printf("\n 继续！\n");i++;flag=1;}else flag=0;}while(flag==1);printf(" 按回车键返回主菜单！");getch();return 0;}/*修改学生信息*/revise_message(){system("cls");int i=0,choice1;int revise_num,flag=0;int r=0;char choice2;printf("\n 输入要修改的学生的学号:");scanf("%d",&revise_num);for(i=0;i<sum;i++){if(revise_num==s[i].num)r=1;}if(r==0||revise_num==0)printf("没有该学生的相关信息");do{for(i=0;i<sum;i++){if(s[i].num==revise_num){printf("\n 你要修改哪一项?\n");printf("\n 1.学号\n");printf("\n 2.姓名\n");printf("\n 3.性别\n");printf("\n 4.年龄\n");printf("\n 5.生日\n");printf("\n 6.家庭住址\n");printf("\n 7.联系方式\n");printf("\n 8.高数--英语--大物--总成绩\n");printf("请选择:");scanf("%d",&choice1);switch(choice1){case 1: printf("\n 输入修改后的学生学号:");scanf("%d",&s[i].num);break;case 2: printf("\n 输入修改后的学生姓名:");scanf("%s",s[i].name);break;case 3: printf("\n 输入修改后的学生性别:");scanf("%s",s[i].sex);break;case 4: printf("\n 输入修改后的学生年龄:");scanf("%d",&s[i].age);break;case 5: printf("\n 输入修改后的学生生日:");scanf("%d%d%d",&s[i].a.year,&s[i].a.month,&s[i].a.day);break;case 6: printf("\n 输入修改后的学生家庭住址: ");scanf("%s",s[i].address);break;case 7: printf("\n 输入修改后的联系方式:");scanf("%s",s[i].tel);break;case 8: printf("\n 输入修改后的高数--英语--大物(成绩0-100):");scanf("%d%d%d",&s[i].c.gao,&s[i].c.ying,&s[i].c.wu);break;}}}printf("\n 要继续吗？(Y/N)");choice2=getch();if(choice2=='y'||choice2=='Y'){printf("\n 继续！\n");flag=1;}else flag=0;}while(flag==1);printf(" 按回车键返回主菜单！");getch();return 0;}/*更新学生信息模块*/renew_message(){system("cls");int choice;do{printf("\n\n\n*****************更新学生信息*******************\n\n");printf(" 1.添加学生信息\n\n");printf(" 2.修改学生信息\n\n");printf(" 0.返回主菜单\n\n");printf(" choice(0-2)");scanf("%d",&choice);switch(choice){case 1:insert_message();break;case 2:revise_message();break;case 0:break;}}while(choice!=0);return 0;}/*按学号查询*/int inquire_num(){system("cls");int i=0,j,r=0;printf("\n 输入要查询的学生的学号:");scanf("%d",&j);for(i=0;i<sum;i++){if(j==s[i].num)r=1;}if(r==0||j==0)printf("没有该学生的相关信息");for(i=0;i<sum;i++)if(j==s[i].num){printf("\n **********学生信息**********\n");MY1;MY2;MY3;MY4;}getch();return 0;}/*按姓名查询*/int inquire_name(){system("cls");int i=0,r=0;char inquire_name[20];printf("\n 输入要查询的学生的姓名:");scanf("%s",inquire_name);for(i=0;i<sum;i++){if(strcmp(s[i].name,inquire_name)==0)r=1;}if(r==0)printf("无该学生信息\n");for(i=0;i<sum;i++)if(strcmp(s[i].name,inquire_name)==0){printf("\n **********学生信息**********\n");MY1;MY2;MY3;MY4;}getch();return 0;}/*查询高数成绩及格的学生*/ int inquire_gao(){system("cls");int i=0,j=0;int x=60;printf("\n ***高数成绩及格的学生的信息***\n");for(i=0;i<sum;i++)if(s[i].c.gao>=x){MY1;MY2;MY3;MY4;j++;}if(j==0)printf("无高数成绩及格的学生\n");getch();return 0;}/*查询英语成绩及格的学生*/ int inquire_ying(){system("cls");int i=0,j=0;int x=60;printf("\n ***英语成绩及格的学生的信息***\n");for(i=0;i<sum;i++)if(s[i].c.ying>=x){MY1;MY2;MY3;MY4;j++;}if(j==0)printf("无英语成绩及格的学生\n");getch();return 0;}/*查询大学物理成绩及格的学生*/ int inquire_wu(){system("cls");int i=0,j=0;int x=60;printf("\n ***大学物理成绩及格的学生的信息***\n");for(i=0;i<sum;i++)if(s[i].c.wu>=x){MY1;MY2;MY3;MY4;j++;}if(j==0)printf("无物理成绩及格的学生\n");getch();return 0;}/*查询各门成绩及格的学生*/int inquire_jige(){system("cls");int choice;do{printf("\n\n********查询学生信息*********\n\n");printf(" 1.查询高数成绩及格的学生\n\n");printf(" 2.查询英语成绩及格的学生\n\n");printf(" 3.查询大学物理成绩及格的学生\n\n");printf(" 0.返回主菜单\n\n");printf(" choice(0-3)\n\n");scanf("%d",&choice);switch(choice){case 1: inquire_gao();break;case 2: inquire_ying();break;case 3: inquire_wu();break;case 0: break;}}while(choice!=0);getch();return 0;}/*查询学生信息模块*/inquire_message(){system("cls");int choice;do{printf("\n\n\n********查询学生信息*********\n\n");printf(" 1.按学号查询\n\n");printf(" 2.按姓名查询\n\n");printf(" 3.查询各门成绩及格的学生\n\n");printf(" 0.返回主菜单\n\n");printf(" choice(0-3)\n\n");scanf("%d",&choice);switch(choice){case 1: inquire_num();break;case 2: inquire_name();break;case 3: inquire_jige();break;case 0: break;}}while(choice!=0);getch();return 0;}/*按学号排名*/int rank_num(){ system("cls");int i=0,j;struct s_message t;for(i=0;i<sum-1;i++){for(j=i+1;j<sum;j++){if(s[i].num>s[j].num){t=s[j];s[j]=s[i];s[i]=t;}}}printf(" 从学号小到大排列:\n");for(i=0;i<sum;i++){MY1;MY2;MY3;MY4;}getch();return 0;}/*按成绩排名*/int rank_score(){ system("cls");int i=0,j;struct s_message t;for(i=0;i<sum-1;i++){for(j=i+1;j<sum;j++){if(s[i].c.total<s[j].c.total){t=s[j];s[j]=s[i];s[i]=t;}}}printf(" 从成绩高到低排列:\n");for(i=0;i<sum;i++){MY1;MY2;MY3;MY4;}getch();return 0;}/*学生排名信息模块*/int rank_message(){ system("cls");int choice;do{printf("\n\n\n***********排名信息************\n\n");printf(" 1.按学号排名\n\n");printf(" 2.按成绩排名\n\n");printf(" 0.返回主菜单\n\n");printf(" choice(0-2)");scanf("%d",&choice);switch(choice){case 1:rank_num();break;case 2:rank_score();break;case 0:break;}}while(choice!=0);return 0;}/*统计男女学生的信息*/int count_nn(){system("cls");int i=0,j=0;char k[5];printf("\n 输入要统计的学生的性别:");scanf("%s",k);printf("\n********** %s的学生的信息**********\n",k);for(i=0;i<sum;i++){if(strcmp(s[i].sex,k)==0){MY1;MY2;MY3;MY4;j++;}}printf("统计%s的人数是:%d",k,j);getch();return 0;}/*按学号删除*/int del_num(){system("cls");int i=0,m=0,k=0,flag;char choice;char de_num;do{printf("\n 输入要删除的学生的学号:");scanf("%d",&de_num);for(i=0;i<sum;i++){if(s[i].num!=de_num);else break;}for(i=0;i<sum;i++){if(s[i].num==de_num){m=i;for(i=m+1;i<sum;i++)s[i-1]=s[i];}}sum--;printf("\n 此学生的信息已被删除**********\n");printf("\n 要继续删除吗？(Y/N)");choice=getch();if(choice=='y'||choice=='Y'){printf("\n 继续！\n");k++;flag=1;}else flag=0;}while(flag==1);printf(" 按任意键返回主菜单！");getch();return 0;}/*按姓名删除*/int del_name(){system("cls");int i=0,m=0,k=0,flag;char choice;char de_name[20];do{printf("\n 输入要删除的学生的姓名:");scanf("%s",&de_name);for(i=0;i<sum;i++){if(strcmp(s[i].name,de_name)!=0);else break;}for(i=0;i<sum;i++){if(strcmp(s[i].name,de_name)==0){m=i;for(i=m+1;i<sum;i++)s[i-1]=s[i];}}sum=sum-1;printf("\n 此学生的信息已被删除**********\n");printf("\n 要继续删除吗？(Y/N)");choice=getch();if(choice=='y'||choice=='Y'){printf("\n 继续！\n");k++;flag=1;}else flag=0;}while(flag==1);printf(" 按任意键返回主菜单！");getch();return 0;}/*删除学生信息模块*/del_message(){system("cls");int choice;do{printf("\n\n\n*****删除学生信息*****\n\n");printf(" 1.按学号删除\n\n");printf(" 2.按姓名删除\n\n");printf(" 0.返回主菜单\n\n");printf(" choice(0-2)");scanf("%d",&choice);switch(choice){case 1:del_num();break;case 2:del_name();break;case 0:break;}}while(choice!=0);getchar();return 0;}/*主函数*/void main(){system("cls");int choice,m;sum=read_message();char a[4]="110",b[4];printf("\n\n\n**********************************请您输入密码**********************************\n");printf("密码:");for(m=0;m<3;m++){ b[m]=getch();printf("*");}b[3]='\0';getch();if(strcmp(a,b)==0){do{printf("\n\n************************************************************************** ******\n");printf("\n\n************密码输入成功欢迎您进入学生信息管理系统******************************\n\n");printf("************************************************************************* *******\n");printf(" 1.录入学生信息\n\n");printf(" 2.输出学生信息\n\n");printf(" 3.更新学生信息\n\n");printf(" 4.查询学生信息\n\n");printf(" 5.学生排名信息\n\n");printf(" 6.统计学生信息\n\n");printf(" 7.删除学生信息\n\n");printf(" 0.退出系统\n\n");printf(" 请选择(0-7):");scanf("%d",&choice);switch(choice){case 1: putin_message();save_message(sum);break;case 2: putout_message();break;case 3: renew_message();break;case 4: inquire_message();break;case 5: rank_message();break;case 6: count_nn();break;case 7: del_message();break;case 0: break;}}while(choice!=0);save_message(sum);printf("学籍信息被保存！--(s.txt)\n");}}。
c语言管理系统设计源代码
c语言管理系统设计源代码以下是一个简单的C语言管理系统示例，用于管理学生信息。
该系统可以添加、删除、修改和查找学生信息。
c复制代码#include<stdio.h>#include<stdlib.h>#include<string.h>struct student {char name[50];int roll;float marks;};struct student students[100];int count = 0;void add_student() {struct student new_student;printf("Enter name: ");scanf("%s", new_);printf("Enter roll number: ");scanf("%d", &new_student.roll);printf("Enter marks: ");scanf("%f", &new_student.marks);students[count] = new_student;count++;}void delete_student() {int index;printf("Enter index of student to delete: ");scanf("%d", &index);for (int i = index; i < count - 1; i++) {students[i] = students[i + 1];}count--;}void modify_student() {int index;struct student new_student;printf("Enter index of student to modify: "); scanf("%d", &index);printf("Enter new name: ");scanf("%s", new_);printf("Enter new roll number: ");scanf("%d", &new_student.roll);printf("Enter new marks: ");scanf("%f", &new_student.marks);students[index] = new_student;}void find_student() {char name[50];printf("Enter name of student to find: "); scanf("%s", name);for (int i = 0; i < count; i++) {if (strcmp(students[i].name, name) == 0) { printf("Roll number: %d\n", students[i].roll); printf("Marks: %.2f\n", students[i].marks); return;}}printf("Student not found.\n");}int main() {int choice;do {printf("\nMenu:\n");printf("1. Add student\n");printf("2. Delete student\n");printf("3. Modify student\n");printf("4. Find student\n");printf("5. Exit\n");printf("Enter choice: ");scanf("%d", &choice);switch (choice) {case1: add_student(); break;case2: delete_student(); break;case3: modify_student(); break;case4: find_student(); break;case5: exit(0); break; // exit the program here, otherwise the loop will keep running indefinitely, as it is in the do-while loop above. We are not returning, but rather exiting the program completely, so we do not need to return anything. The return value of main is always 0, and this is how the program exits. If you want to return a value other than 0, you can do so like this: return 1; or return -1; or return any other integer value you want to represent an error condition. The operating system will interpret this as the program's exit status. In this case, it will be seen as successful, as it is returning 0. The return value of main is not used for anything in this program, but it can be used in other programs to determine whether the program exited successfully or with an error. For example, if you were writing a shell script that executed this program and needed to know if it was successful or not, you could check the return value of the program and act accordingly. This is a common practice in programming, and it is important to understand how it works so that you can use it effectively in your own programs.。
C语言学生信息管理系统(源代码)
#include <stdio.h>#include <string.h>/* 谭法建立单链表和输出单链表*/#include <malloc.h>#include <stdlib.h>typedef struct node{ int num;char name[20];struct node *next;}STD;#define LEN sizeof(STD)int menu_select();void handle_menu1();void game4();void game2();STD *insert(STD *head,STD *stud);STD *insert2(STD *head,STD *stud); void game3();void game5();STD *delete(STD*head,long num);void game1();void game6();STD *search(STD*head,long num);STD *head1,*head2;int n=0;/*追加法建表*/void creat1(void){ STD *p1,*p2;system("CLS");head1=NULL;p1=(STD *)malloc(LEN);p2=p1;printf("建表方法1追加法建表!\n");printf("输入学号姓名,若输入学号为0则退出建表!\n");scanf("%d%s",&p1->num,p1->name);while(p1->num!=0){ n++;if(n==1)head1=p1;elsep2->next=p1;p2=p1;p1=(STD *)malloc(LEN);scanf("%d%s",&p1->num,p1->name);}free(p1); p2->next=NULL;scanf("%*c");printf("按回车键继续!\n");getchar();system("CLS");return ;}/* 插入法建表*/void creat2(void){ STD *p1;head2=NULL;system("CLS");p1=(STD *)malloc(LEN);printf("建表方法2插入法建表!\n");printf("输入学号姓名(输入学号以0结束)!\n");scanf("%d%s",&p1->num,p1->name);while(p1->num!=0){ p1->next=head2;head2=p1;p1=(STD *)malloc(LEN);scanf("%d%s",&p1->num,p1->name);}scanf("%*c");printf("按回车键继续!\n");getchar();system("CLS");free(p1);return ;}/* 链表输出*/void print(STD *head){ STD *p;p=head;while (p!=NULL){ printf("学号%3d 姓名%s\n",p->num,p->name); p=p->next;} printf("链表为空!\n");scanf("%*c");printf("按回车键继续!\n");getchar();system("CLS");}/*-------------------------------------------------*//*--------------表1插入结点函数-------*//*-------------------------------------------------*/void game4(){char ch;STD *stud,*head=head1;system("CLS");printf("\t仅限在表1中插入!\n");printf("\t输入要插入结点的学号和姓名(以空格隔开):");stud=(STD *)malloc(LEN);scanf("%*c");scanf("%d%s",&stud->num,&stud->name);if(stud->num<0){ printf("\t输入的学号不能为负数,请重新选择插入!\n");return;}while(stud->num>=0){head1=insert(head,stud);printf("\t继续插入新结点吗?(y/n):");ch=getchar();if(ch=='y'||ch=='Y'){ printf("\t输入新结点学号姓名:(输入n结束插入)");stud=(STD *)malloc(LEN);scanf("%*c");scanf("%d%s",&stud->num,&stud->name);}elsebreak;}printf("\t输入回车键返回!\n");getchar();system("CLS");printf("\n");}/*-------------------------------------------------*//*--------------表2插入结点函数-------*//*-------------------------------------------------*/void game2(){char ch;STD *stud,*head=head2;system("CLS");printf("\t仅限在表2中插入!\n");printf("\t输入要插入结点的学号和姓名(以空格隔开):");stud=(STD *)malloc(LEN);scanf("%*c");scanf("%d%s",&stud->num,&stud->name);if(stud->num<0){ printf("\t输入的学号不能为负数,请重新选择插入!\n");return;}while(stud->num>=0){head2=insert2(head,stud);printf("\t继续插入新结点吗?(y/n):");ch=getchar();if(ch=='y'||ch=='Y'){ printf("\t输入新结点学号姓名:(输入n结束插入)");stud=(STD *)malloc(LEN);scanf("%*c");scanf("%d%s",&stud->num,&stud->name);}elsebreak;}printf("\t输入回车键返回!\n");getchar();system("CLS");printf("\n");}/**************************************//* 插入模块*//**************************************/STD *insert(STD *head,STD *stud){STD *p0,*p1,*p2;p1=head;p0=stud;if(head==NULL){head=p0;p0->next=NULL;}else{while((p0->num>p1->num)&&(p1->next!=NULL)){p2=p1; p1=p1->next;}if(p0->num<=p1->num){if(head==p1)head=p0;else p2->next=p0;p0->next=p1;}else{p1->next=p0;p0->next=NULL;}}n=n+1;printf("按回车键继续!\n");getchar();system("CLS");return (head);}/**************************************//* 插入模块2 *//**************************************/STD *insert2(STD *head,STD *stud){STD *p0,*p1,*p2;p1=head;p0=stud;if(head==NULL){head=p0;p0->next=NULL;}else{while((p0->num<p1->num)&&(p1->next!=NULL)){p2=p1; p1=p1->next;}if(p0->num>=p1->num){if(head==p1)head=p0;else p2->next=p0;p0->next=p1;}else{p1->next=p0;p0->next=NULL;}}n=n+1;printf("按回车键继续!\n");getchar();system("CLS");return (head);}/*-------------------------------------------------*//*--------------表1删除学生信息-------*//*-------------------------------------------------*/void game3(){ int num;char ch;STD *head=head1;printf("\t仅限在表1中删除!\n");printf("\t输入要删除的学号:");scanf("%*c");scanf("%ld",&num);if(num<0){ printf("\t输入的学号不能为负数,请重新选择删除!\n");return;}while(num>=0){head=head1;head1=delete(head,num);printf("\t继续删除吗?(y/n):");scanf("%*c");ch=getchar();if(ch=='y'||ch=='Y'){ printf("\t输入要删除的学号:(输入n结束删除！)");scanf("%*c");scanf("%ld",&num);}elsebreak;}printf("\t输入回车键返回!\n");getchar();system("CLS");printf("\n");}/*-------------------------------------------------*//*--------------表2删除学生信息-------*//*-------------------------------------------------*/void game5(){ int num;char ch;STD *head=head2;printf("\t仅限在表2中删除!\n");printf("\t输入要删除的学号:");scanf("%*c");scanf("%ld",&num);if(num<0){ printf("\t输入的学号不能为负数,请重新选择删除!\n");return;}while(num>=0){head=head2;head2=delete(head,num);printf("\t继续删除吗?(y/n):");scanf("%*c");ch=getchar();if(ch=='y'||ch=='Y'){ printf("\t输入要删除的学号:(输入n结束删除！)");scanf("%*c");scanf("%ld",&num);}elsebreak;}printf("\t输入回车键返回!\n");getchar();system("CLS");printf("\n");}/**************************************//* 删除模块*//**************************************/STD *delete(STD*head,long num){STD *p1,*p2;if (head==NULL) {printf("\n没有找到该学号!\n");return head;} p1=head;while(num!=p1->num&&p1->next!=NULL){p2=p1;p1=p1->next;}if(num==p1->num){if(p1==head)head=p1->next;else p2->next=p1->next;printf("\n删除:%ld\n",num);n=n-1;}elseprintf("\n 没有发现此项! \n",num);system("CLS");return(head);}/*-------------------------------------------------*//*--------------表1查找学生信息-------*//*-------------------------------------------------*/void game1(){ int num;char ch;STD *head=head1;printf("\t仅限在表1中查找!\n");printf("\t输入要查找的学号:");scanf("%ld",&num);if(num<0){ printf("\t输入的学号不能为负数,请重新查找!\n");return;}while(num>=0){head=head1;head1=search(head,num);printf("\t继续查找吗?(y/n):");scanf("%d",&num);ch=getchar();if(ch=='y'||ch=='Y'){ printf("\t输入要查找的学号:(输入n结束查找)");scanf("%ld",&num);}elsebreak;}printf("\t输入回车键返回!\n");getchar();system("CLS");printf("\n");}/*-------------------------------------------------*//*--------------表2查找学生信息-------*//*-------------------------------------------------*/void game6(){ int num;char ch;STD *head=head2;printf("\t仅限在表2中查找!\n");printf("\t输入要查找的学号:");scanf("%ld",&num);if(num<0){ printf("\t输入的学号不能为负数,请重新查找!\n");return;}while(num>=0){head=head2;head2=search(head,num);printf("\t继续查找吗?(y/n):");scanf("%d",&num);ch=getchar();if(ch=='y'||ch=='Y'){ printf("\t输入要查找的学号:(输入n结束查找)");scanf("%ld",&num);}elsebreak;}printf("\t输入回车键返回!\n");getchar();system("CLS");printf("\n");}/**************************************//* 查找模块*//**************************************/STD *search(STD*head,long num){STD *p1,*p2;if (head==NULL) {printf("\n没有找到该学号!\n");return head;} p1=head;while(num!=p1->num&&p1->next!=NULL){p2=p1;p1=p1->next;}if(num==p1->num)printf("\n%d %s\n",p1->num,p1->name);elseprintf("\n 没有发现此项! \n",num);return(head);}/* void main(){printf(" *** 运行结果***\n");printf("输入学号姓名(输入学号以0结束)!\n");creat1();print(head1);creat2();print(head2);} *///******************************//* select.cpp:主程序文件*//******************************void main(){handle_menu1();}//*****************************//* 菜单处理函数*//*****************************void handle_menu1(){int h;for(;;){h=menu_select();switch(h){ case 1:/* printf("\t进入追加法建表\n"); */creat1();break; /* 调用功能模块*/case 2:/* printf("\t进入插入法建表\n"); */creat2();break;case 3:/* printf("\t输出追加法链表的结果\n"); */print(head1);break;case 4:/* printf("\t输出插入法链表的结果\n"); */print(head2);break;case 5:/* printf("\t链表1插入\n"); */game4();break;case 6:/* printf("\t链表2插入\n"); */game2();break;case 7:/* printf("\t链表1删除\n"); */game3();break;case 8:/* printf("\t链表2删除\n"); */game5();break;case 9:/* printf("\t链表1查找\n"); */game1();break;case 10:/* printf("\t链表2查找\n"); */game6();break;case 11:printf("\t再见,欢迎再次使用本系统!谢谢！\n");return;}}}//**********************************//* 菜单选择函数: int menu_select()*//**********************************int menu_select(){int cn;for(;;){printf("\ \n");printf("\t1.追加法建表\n");printf("\ \n");printf("\t2.插入法建表\n");printf("\ \n");printf("\t3.输出链表1\n");printf("\ \n");printf("\t4.输出链表2\n");printf("\ \n");printf("\t5.插入链表1 \n");printf("\ \n");printf("\t6.插入链表2 \n");printf("\ \n");printf("\t7.删除链表1 \n");printf("\ \n");printf("\t8.删除链表2 \n");printf("\ \n");printf("\t9.查找链表1 \n");printf("\ \n");printf("\t10.查找链表2 \n");printf("\ \n");printf("\t11.退出系统\n");printf("\ \n");printf("\t请您选择1-11:");scanf("%d",&cn);//gets(s);//cn=atoi(s);if(cn<1||cn>11)printf("\n\t输入错误,重选1-11:");elsebreak;}return cn;}。
学生信息管理系统C语言程序代码
#include <iostream.h> #include <iomanip.h>#include <fstream>#include <vector>#include <malloc.h>#include <stdlib.h>#include <string>#include <process.h>#include <stdio.h>#define LEN sizeof(struct student)using namespace std;int n=0; //定义一个全局变量统计学生人数struct student//定义一个学生信息的构造体char name[20]; //用来存放姓名的char sex[20]; //用来存放性别的char yuanxi[20];//用来存放院系的long int id; //用来存放学号的int score[4]; //用来存放分数的int total; //用来存放总分数的struct student *next;vector <student> stu;class Informationpublic:Information() ; //构造函数.~Information() ; //析构函数.student *creat();//建立链表函数。
void output(student *head);int count(student *head);//定义函数count()统计考生总数student *insert(student*head);//指针函数*insert()用来添加考生信息.student *cancel(student *head,long int num);//指针函数*cancel()用来删除考生信息.student *find(student *head,long int num); //指针函数*find()用来查找考生信息.void inorder(student *head);//定义inorder()函数将考生的总分从大到小排列并输出void average( student *head);//求学生成绩的平均分的函数void save(student *head);//保存函数student *Read();//读取函数private:student *p1,*p2,*p3,*head,st;Information::Information() //构造函数cout<<"******************************************************************************\n";cout<<" ------------------------<<欢送您使用学生信息管理系统>>------------------------\n";cout<<"******************************************************************* ***********\n\n";Information::~Information() //构造函数cout<<"******************************************************************* ***********\n";cout<<" ------------------------<<谢谢您使用学生信息管理系统>>------------------------\n";cout<<"******************************************************************* ***********\n";student *Information::creat(void) //定义一个指向struct student的构造体指针函数*creat()用来增加学生信息.char ch[20];n=0; //用来存放姓名的p1=p2=(student *)malloc(LEN);//调用malloc()函数用来开辟一个新的存储单元cout<<" -------------<<请建立学生考试信息表,在姓名处输入! 完毕输入。
c语言学生成绩信息管理系统源代码
C语言学生成绩信息管理系统源代码一、概述在学校教学管理工作中，学生成绩信息管理是一个至关重要的环节。
为了方便高效地进行学生成绩信息的录入、查询和管理，我们可以利用C语言编写一个学生成绩信息管理系统。
本文将介绍该系统的源代码，并对其进行详细的解释和讲解。
二、系统功能需求1. 录入学生成绩信息2. 查询学生成绩信息3. 修改学生成绩信息4. 删除学生成绩信息5. 显示所有学生成绩信息三、系统源代码实现```c#include <stdio.h>#include <stdlib.h>#include <string.h>// 定义学生结构体typedef struct student {int id; // 学号char name[20]; // 尊称float score; // 成绩} Student;// 全局变量int count = 0; // 记录学生数量Student students[100]; // 学生数组// 录入学生成绩信息void inputStudentInfo() {printf("请输入学生学号：");scanf("d", students[count].id);printf("请输入学生尊称：");scanf("s", students[count].name); printf("请输入学生成绩：");scanf("f", students[count].score); count++;}// 查询学生成绩信息void queryStudentInfo(int id) {for (int i = 0; i < count; i++) {if (students[i].id == id) {printf("学生信息如下：\n");printf("学号：d\n", students[i].id);printf("尊称：s\n", students[i].name);printf("成绩：.2f\n", students[i].score);return;}}printf("未找到该学生信息！\n");}// 修改学生成绩信息void modifyStudentInfo(int id, char *name, float score) { for (int i = 0; i < count; i++) {if (students[i].id == id) {strcpy(students[i].name, name);students[i].score = score;printf("修改成功！\n");return;}}printf("未找到该学生信息！\n");}// 删除学生成绩信息void deleteStudentInfo(int id) {for (int i = 0; i < count; i++) {if (students[i].id == id) {for (int j = i; j < count - 1; j++) { students[j] = students[j + 1]; }count--;printf("删除成功！\n");return;}}printf("未找到该学生信息！\n");}// 显示所有学生成绩信息void displayAllStudentInfo() {if (count == 0) {printf("暂无学生信息！\n");return;}printf("学生成绩信息如下：\n");for (int i = 0; i < count; i++) {printf("学号：d，尊称：s，成绩：.2f\n", students[i].id, students[i].name, students[i].score);}}int m本人n() {int choice, id;char name[20];float score;while (1) {printf("欢迎使用学生成绩信息管理系统！\n");printf("1. 录入学生成绩信息\n");printf("2. 查询学生成绩信息\n");printf("3. 修改学生成绩信息\n");printf("4. 删除学生成绩信息\n");printf("5. 显示所有学生成绩信息\n");printf("6. 退出系统\n");printf("请选择操作：");scanf("d", choice);switch (choice) {case 1: // 录入学生成绩信息inputStudentInfo();break;case 2: // 查询学生成绩信息printf("请输入要查询的学生学号："); scanf("d", id);queryStudentInfo(id);break;case 3: // 修改学生成绩信息printf("请输入要修改的学生学号："); scanf("d", id);printf("请输入修改后的尊称：");scanf("s", name);printf("请输入修改后的成绩：");scanf("f", score);modifyStudentInfo(id, name, score); break;case 4: // 删除学生成绩信息printf("请输入要删除的学生学号："); scanf("d", id);deleteStudentInfo(id);break;case 5: // 显示所有学生成绩信息displayAllStudentInfo();break;case 6: // 退出系统printf("感谢使用学生成绩信息管理系统！\n");exit(0);default:printf("请输入正确的操作！\n");}}return 0;}```四、系统运行效果1. 运行系统后，会出现一个菜单，根据需求选择相应的操作。
c语言--学生信息管理系统代码
#include <stdio.h>#include <stdlib.h>#include <string.h>#define FUNC_NEW 1 /* 建立新的班级学生数据*/#define FUNC_SA VE 2 /*把数据写入文件并保存*/#define FUNC_OPEN 3 /*打开文件并从里读入数据*/#define FUNC_INSERT 4 /*插入一个学生的信息*/#define FUNC_SEARCH 5 /*查找学生的信息*/#define FUNC_CHANGE 6 /*修改学生的信息*/#define FUNC_DELETE 7 /*删除学生的信息*/#define FUNC_DISPLAY 8 /*展示学生的信息*/#define FUNC_CENSUS 9 /*分段统计学生总分人数并打印*/ #define FUNG_EXIT 10/*结束程序*/#define FUNC_CLOSE 10#define MAX_NUM 45#define MAX_NAME_STRLEN 30void DoSave();void DoOpen();void DoNew();void DoInsert();void DoDisplay();void DoDelete();void DoSearch();void DoChange();void Docensus();void DoExit();//用户定义的类型声明struct _student{int id;char name[MAX_NAME_STRLEN];int Math;int English;int Chinese;int Physics;int Chemistry;float averScore;int sum;};typedef struct _student STUD;struct _studTb{STUD stud[MAX_NUM];int length;};//全局变量的定义struct _studTb si;char strClassId[15];int main(){int iUserSelect;int MainMenu();system("color 20");for(;;){iUserSelect = MainMenu();if(FUNC_CLOSE == iUserSelect)break;switch(iUserSelect){case FUNC_NEW:DoNew();break;case FUNC_OPEN:DoSave();break;case FUNC_SA VE:DoOpen();break;case FUNC_INSERT:DoInsert();break;case FUNC_SEARCH:DoSearch();break;case FUNC_CHANGE:DoChange();break;case FUNC_DELETE:DoDelete();break;case FUNC_DISPLAY:DoDisplay();break;case FUNC_CENSUS:Docensus();break;case FUNC_CLOSE :DoExit();break;default:break;}}}int MainMenu(){int iUserSelect;system("cls");printf(" --------------------------------------------------------------------- \n");printf(" | ***********欢迎来到学生管理系统********** |\n");printf(" | ****** 1> 新建学生信息****** | \n");printf(" | ****** 2> 保存学生信息****** | \n");printf(" | ****** 3> 打开学生信息****** | \n");printf(" | ****** 4> 插入学生信息****** | \n");printf(" | ****** 5> 查找学生信息****** | \n");printf(" | ****** 6> 修改学生信息****** |\n");printf(" | ****** 7> 删除学生信息****** | \n");printf(" | ****** 8> 展示学生信息的成绩排名****** | \n");printf(" | ****** 9> 分段统计学生信息****** | \n");printf(" | ****** 10> 退出学生系统****** | \n");printf(" | *****Please select a function id(1..9) to execute:***** | \n");printf(" --------------------------------------------------------------------- \n");scanf("%d",&iUserSelect);if(iUserSelect<1&&iUserSelect>9)printf("请正确输入指令\n");elsereturn iUserSelect;}void DoNew(){int number,i;system("cls");printf("\t\tFUNCION: 新建一个班级:\n");printf("\t\t请输入班级序号(string):");scanf("%s",strClassId);printf("\t\t请输入这个班有多少人:");scanf("%d",&number);for (i = 0; i < number; i++){printf("\t\t请输入学生学号:");scanf("%d",&si.stud[i].id);printf("\t\t请输入学生姓名:");scanf("%s",si.stud[i].name);printf("\t\t请输入学生成绩:\n");printf("\t\tMath English Chinese Physics Chemistry\n");scanf("%4d %4d %4d %4d %4d",\& si.stud[i].Math,& si.stud[i].English,& si.stud[i].Chinese,& si.stud[i].Physics,& si.stud[i].Chemistry);}si.length = number;}//保存学生信息void DoSave(){FILE *fp;int i;system("cls");if((fp=fopen("stu-list.txt","wb"))==NULL){printf("打开文件失败\n");return;}for(i=0;i<si.length;i++){if(fwrite(&si.stud[i],sizeof(si),1,fp)==1)printf("保存成功\n");}fclose(fp);}//开文件读取学生信息void DoOpen(){FILE *fp;int i=0;system("cls");if((fp=fopen("stu-list.txt","ab+"))==NULL){printf("打开文件失败\n");return;}while(!feof(fp)){if(fread(&si.stud[i],sizeof(si),1,fp)==1)i++;}fclose(fp);for(i=0;i<si.length;i++)printf("学号：%d 姓名：%s 数学：%d 英语：%d 语文：%d 物理：%d 化学：%d\n",si.stud[i].id,si.stud[i].name,si.stud[i].Math,si.stud[i].English,si.stud[i].Chinese,si.stud[i].Physics,si.stud[i].Chemistry);}//插入学生信息void DoInsert(){FILE *fp;int j,INid,sid;int m=0,i=0,k=0;system("cls");if((fp=fopen("stu-list.txt","ab+"))==NULL){ printf("\t文件打开失败！");getchar();return;}while(!feof(fp)){if(fread(&si.stud[i],sizeof(si),1,fp)==1)m++;i++;}/*if(m==0){printf("没有学生记录!");fclose(fp);return;}*/printf("\t请输入要插入信息在那个学号之后：\n");scanf("%d",&INid);for(i=0;i<m;i++)if(INid==si.stud[i].id)break;for(j=m-1;j>i;j--)si.stud[j+1]=si.stud[j];stare1:printf("\t请输入要插入的学生的信息：\n");printf("\t请输入要插入的学号");scanf("%d",&sid);while(k<m){if(si.stud[k].id==sid){printf("\t 该学号已经存在，不允许重复插入！\n");goto stare1;}k++;}si.stud[i+1].id=sid;printf("\t请输入你想输入的姓名");scanf("%s",si.stud[i+1].name);printf(" Math English Chinese Physics Chemistry\n");scanf("%d %d %d %d %d",& si.stud[i+1].Math,& si.stud[i+1].English,& si.stud[i+1].Chinese,& si.stud[i+1].Physics,& si.stud[i+1].Chemistry);si.length=si.length+1;DoSave();}//在文件中查找学生信息，支持姓名学号查找void DoSearch(){int i=0,choice,Sid;char sname[MAX_NAME_STRLEN];int flag=0;system("cls");DoOpen();printf("\n1按姓名查找:\n2按学号查找：");scanf("%d",&choice);switch(choice){case 1: printf("请你输入要查找的姓名");scanf("%s",sname);while(i<si.length){if(strcmp(si.stud[i].name,sname)==0){flag=1;printf("学号：%d 姓名：%s 数学成绩：%d 英语成绩：%d 语文成绩：%d 物理成绩：%d 化学成绩：%d\n",si.stud[i].id,si.stud[i].name ,si.stud[i].Math,si.stud[i].English,si.stud[i].Chinese,si.stud[i].Physics,si.stud[i].Chemistry);}i++;}if(flag==0)printf("你输入的姓名不存在，请确认后再输入");break;case 2: printf("请你输入要查找的学号");scanf("%d",&Sid);while(i<si.length){if(Sid==si.stud[i].id){flag=1;printf("学号：%d 姓名：%s 数学成绩：%d 英语成绩：%d 语文成绩：%d 物理成绩：%d 化学成绩：%d\n",si.stud[i].id,si.stud[i].name ,si.stud[i].Math,si.stud[i].English,si.stud[i].Chinese,si.stud[i].Physics,si.stud[i].Chemistry);}i++;}if(flag==0)printf("你输入的学号不存在，请确认后再输入");break;}printf(" Please input a number to continue!");scanf("%d",&i);return;}//对学生信息进行修改void DoChange(){int choice1;int i=0;int onum;char choice2;system("cls");DoOpen();printf("你想对那个学生进行操作，请输入学号\n");scanf("%d",&onum);while(onum!=si.stud[i].id)i++;if(onum==si.stud[i].id){printf("\n你要修改哪一项");printf("1学号\n2姓名\n3数学成绩\n4英语成绩\n5语文成绩\n6物理成绩\n7化学成绩");printf("请选择");scanf("%d",&choice1);switch(choice1){case 1: printf("\n请输入修改后的学号");scanf("%d",&si.stud[i].id);break;case 2: printf("\n输入你要修改的姓名");scanf("%s",&si.stud[i].name);break;case 3: printf("\n请输入要修改的成绩");scanf("%d",&si.stud[i].Math);break;case 4: printf("\n请输入要修改的成绩");scanf("%d",&si.stud[i].English);break;case 5: printf("\n请输入要修改的成绩");scanf("%d",&si.stud[i].Chinese);break;case 6: printf("\n请输入要修改的成绩");scanf("%d",&si.stud[i].Physics);break;case 7: printf("\n请输入要修改的成绩");scanf("%d",&si.stud[i].Chemistry);break; }}elseprintf("没有该同学信息");printf(" Please input a number(0..9) to continue!");scanf("%d",&i);}//删除学生信息void DoDelete(){int i,id;char fname[MAX_NAME_STRLEN];system("cls");DoOpen();printf("请输入学生学号");scanf("%d",&id);i=0;while(si.stud[i].id!=id)i++;if(si.stud[i].id==id){while(i<si.length-1){si.stud[i]=si.stud[i+1];i++;}si.length=si.length-1;for(i=0;i<si.length;i++)printf("学号：%d 姓名：%s 数学：%d 英语：%d 语文：%d 物理：%d 化学：%d \n",si.stud[i].id,si.stud[i].name,si.stud[i].Math,si.stud[i].English,si.stud[i].Chinese,si.stud[i].Physics,si.stud[i].Chemistry);}elseprintf("没有该同学信息");printf(" Please input a number(0..9) to continue!");scanf("%d",&i);}//展示学生信息void DoDisplay(){struct _studTb m;int i,j,n;system("cls");DoOpen();printf("请选择\n1.数学排名2.英语排名3.语文排名 4.物理排名 5.化学排名 6.学生总分并排序7.学生平均分并排序\n");scanf("%d",&n);if(n==1){for(j=0;j<si.length-1;j++){for(i=0;i<si.length-j-1;i++)if(si.stud[i].Math<si.stud[i+1].Math){m.stud[1]=si.stud[i];si.stud[i]=si.stud[i+1];si.stud[i+1]=m.stud[1];}}for(i=0;i<si.length;i++)printf("学号：%d 姓名：%s 数学成绩排名：%d\n", si.stud[i].id, si.stud[i].name ,si.stud[i].Math);}else if(n==2){for(j=0;j<si.length-1;j++){for(i=0;i<si.length-j;i++)if(si.stud[i].English<si.stud[i+1].English){m.stud[1]=si.stud[i];si.stud[i]=si.stud[i+1];si.stud[i+1]=m.stud[1];}}for(i=0;i<si.length;i++)printf("学号：%d 姓名：%s 英语成绩排名：%d\n", si.stud[i].id, si.stud[i].name ,si.stud[i].English);}else if(n==3){for(j=0;j<si.length-1;j++){for(i=0;i<si.length-j;i++)if(si.stud[i].Chinese<si.stud[i+1].Chinese){m.stud[1]=si.stud[i];si.stud[i]=si.stud[i+1];si.stud[i+1]=m.stud[1];}}for(i=0;i<si.length;i++)printf("学号：%d 姓名：%s 语文成绩排名：%d\n", si.stud[i].id, si.stud[i].name, si.stud[i].Chinese);}else if(n==4){for(j=0;j<si.length-1;j++){for(i=0;i<si.length-j;i++)if(si.stud[i].Physics<si.stud[i+1].Physics){m.stud[1]=si.stud[i];si.stud[i]=si.stud[i+1];si.stud[i+1]=m.stud[1];}}for(i=0;i<si.length;i++)printf("学号：%d 姓名：%s OS成绩排名：%d\n", si.stud[i].id, si.stud[i].name, si.stud[i].Physics);}else if(n==5){for(j=0;j<si.length-1;j++){for(i=0;i<si.length-j;i++)if(si.stud[i].Chemistry<si.stud[i+1].Chemistry){m.stud[1]=si.stud[i];si.stud[i]=si.stud[i+1];si.stud[i+1]=m.stud[1];}}for(i=0;i<si.length;i++)printf("学号：%d 姓名：%s C语言成绩排名：%d\n", si.stud[i].id, si.stud[i].name,si.stud[i].Chemistry);}else if(n==6){for(i=0;i<si.length;i++)si.stud[i].sum=si.stud[i].Math+si.stud[i].English+si.stud[i].Chinese+si.stud[i].Physics+si.stud [i].Chemistry;for(j=0;j<si.length-1;j++){for(i=0;i<si.length-j;i++)if(si.stud[i].sum<si.stud[i+1].sum){m.stud[1]=si.stud[i];si.stud[i]=si.stud[i+1];si.stud[i+1]=m.stud[1];}}for(i=0;i<si.length;i++)printf("学号：%d 姓名：%s 总分成绩排名：%f\n", si.stud[i].id, si.stud[i].name, si.stud[i].sum);}else if(n==7){for(i=0;i<si.length;i++){si.stud[i].sum=si.stud[i].Math+si.stud[i].English+si.stud[i].Chinese+si.stud[i].Physics+si.stud [i].Chemistry;si.stud[i].averScore=(float)si.stud[i].sum/si.length;}for(j=0;j<si.length-1;j++){for(i=0;i<si.length-j;i++)if(si.stud[i].averScore<si.stud[i+1].averScore){m.stud[1]=si.stud[i];si.stud[i]=si.stud[i+1];si.stud[i+1]=m.stud[1];}}for(i=0;i<si.length;i++)printf("学号：%d 姓名：%s 平均成绩排名：%f\n", si.stud[i].id, si.stud[i].name, si.stud[i].averScore);}printf(" Please input a number(0..9) to continue!");scanf("%d",&i);}//统计学生信息void Docensus(){struct _studTb sen;int mark;int sum=0;int i=0;system("cls");DoOpen();printf("请输入要统计多少分以上的学生信息");scanf("%d",&mark);while(i<si.length){ if(si.stud[i].Math>mark){sen.stud[sum]=si.stud[i];sum++;}i++;}printf("一共有:%d人\n",sum);for(i=0;i<sum;i++)printf("他的学号%4d姓名%s数学成绩%4d英语成绩%4d 语文成绩%4d 物理成绩%4d 化学成绩%4d\n ",sen.stud[i].id,sen.stud[i].name,sen.stud[i].Math,sen.stud[i].English,sen.stud[i].Chinese,sen.stud[i].Physics,sen.stud[i].Chemistry);printf(" Please input a number(0..9) to continue:");scanf("%d",&i);}void DoExit(){printf("\t\t 谢谢使用!\n");printf("\t\t");system("pause");exit(0);}。
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学生信息管理系统c语言版源代码#include <stdio.h> #include <string.h> #include <stdlib.h> #include <conio.h> #define N 1000typedef struct student {int number;char name[20];int grade;int gaoshu;int yingyu;int jisuanji;int sum;}STUDENT;STUDENT student[N]; int shuliang=0;void menu();void fhzjm(){char biaozhi[20];printf("\n");printf("还需要操作么,如果需要操作请输入:yes，否则请输入:no\n");scanf("%s",biaozhi);if(strcmp(biaozhi,"yes")==0){menu();}else if(strcmp(biaozhi,"no")==0)exit(0);else{printf("请输入正确的字符，谢谢～\n"); fhzjm();}}void DengJi(){int rs;int i,k=1;system("CLS");printf("请输入需要输入几个学生信息:"); scanf("%d",&rs);for(i=shuliang;i<shuliang+rs;i++,k++) {printf("请输入第%d个学生的学号:",k); scanf("%d",&student[i].number);printf("请输入学生的姓名:");scanf("%s",student[i].name);printf("请输入学生3门课的成绩:"); printf("请输入第1门课的成绩:");scanf("%d",&student[i].gaoshu);printf("请输入第2门课的成绩:");scanf("%d",&student[i].yingyu);printf("请输入第3门课的成绩:");scanf("%d",&student[i].jisuanji);}shuliang=shuliang+rs;fhzjm();}void ShanChu(){char shanchuinfo[10];system("CLS");printf("删除全部学生信息请输入\"all\"，删除指定学号的学生信息请输入\"one\"\n");scanf("%s",shanchuinfo);if(strcmp(shanchuinfo,"all")==0){int j;printf("你删除的学生信息如下:\n");printf("-----------学号-------------姓名-------------高数--------------英语--------------计算机\t\n");for(j=0;j<shuliang;j++)printf("----%d-------%s-------%d-------%d-------%d\t\n",student[j].number,student[j].name,student[j].gaoshu,student[j].jisuanji);shuliang=0;printf("删除成功\n\n");}else if(strcmp(shanchuinfo,"one")==0){struct student *p=NULL;int choice;int i,j,k=0;printf("请输入你要删除的人的学号:");scanf("%d",&choice);for(i=0;i<shuliang;i++){if(choice==student[i].number){k=1;j=i;break;}}if(k){if(shuliang==1){p=&student[0];free(p);shuliang=0;}else{for(i=j;i<shuliang;i++) {student[i]=student[i+1];}shuliang=shuliang-1;}printf("删除成功\n\n");}else{printf("输入数据错误～\n"); }}fhzjm();}void LiuLan(){int i;system("CLS");if(shuliang==0){printf("系统里面没有任何学生的信息～\n");}else{for(i=0;i<shuliang;i++){printf("第%d个学生的学号为:%d\n",i+1,student[i].number);printf("第%d个学生的姓名为:%s\n",i+1,student[i].name);printf("第%d个学生的第一门课的成绩为:%d\n",i+1,student[i].gaoshu);printf("第%d个学生的第二门课的成绩为:%d\n",i+1,student[i].yingyu);printf("第%d个学生的第三门课的成绩为:%d\n",i+1,student[i].jisuanji);student[i].sum=student[i].gaoshu+student[i].yingyu+student[i].jisuan ji;printf("第%d个学生的总成绩为:%d\n",i+1,student[i].sum);}}fhzjm();}void ChaZhao(){int xx;char choice,yy[20];int i,j,k=0;system("CLS");if(shuliang==0){printf("系统里面没有任何学生的信息～\n");fhzjm();}printf("三种查找方式:学号，姓名，成绩\n");printf("如果按学号查找请输1，如果按姓名查找请输2，如果按成绩查找请输3\n");printf("请输入您查找的方式:");scanf("%s",&choice);if(choice=='1'){printf("请输入需要查找学生的学号:");scanf("%d",&xx);printf("您所查找的学生的信息为:\n");printf("----学号----姓名----高数成绩----英语成绩----计算机成绩----\t\n");for(i=0;i<shuliang;i++){if(xx==student[i].number){j=i;k=1;printf("----%d-------%s-------%d-------%d-------%d----\t\n",student[j].number,student[j].name,student[j].gaoshu,student[j].yingyu,student[i].jis uanji);}}if(k==0)printf("输入信息有误:\n");}else if(choice=='2'){printf("请输入需要查找学生的姓名:\n");scanf("%s",yy);printf("您所查找的学生的信息为:\n");printf("----学号----姓名----高数成绩----英语成绩----计算机成绩----\t\n");for(i=0;i<shuliang;i++){if(strcmp(yy,student[i].name)==0){j=i;k=1;printf("----%d-------%s-------%d-------%d-------%d----\t\n",student[j].number,student[j].name,student[j].gaoshu,student[j].yingyu,student[j].jis uanji);}}if(k==0)printf("输入信息有误:\n");}else if(choice=='3'){printf("请输入需要查找学生的成绩:\n");scanf("%d",&xx);printf("您所查找的学生的信息为:\n");printf("----学号----姓名----高数----英语----计算机----\t\n");for(i=0;i<shuliang;i++){if(xx==student[i].grade){j=i;k=1;printf("----%d-------%s-------%d-------%d-------%d----\t\n",student[j].number,student[j].name,student[j].gaoshu,student[j].yingyu,student[i].jis uanji);}}if(k==0)printf("输入信息有误:\n");}fhzjm();}void PaiXu(){struct student *p1[N],**p2,*temp;int i,j;system("CLS");p2=p1;for( i=0;i<shuliang;i++){p1[i]=student+i;}for( i=0;i<shuliang;i++){for( j=i+1;j<shuliang;j++){if((*(p2+i))->sum<(*(p2+j))->sum){temp=*(p2+i);*(p2+i)=*(p2+j);*(p2+j)=temp;} }}printf("按照总成绩排序之后的信息为:\n");printf("----学号----姓名----总成绩----\t\n");for( i=0;i<shuliang;i++){student[i].sum=student[i].gaoshu+student[i].yingyu+student[i].jisuan ji;printf("----%d-----%s----%d-----\n",(*(p2+i))->number,(*(p2+i))->name,(*(p2+i))->sum);}fhzjm();}void CunChu(){int i;FILE *rs;if((rs=fopen("student.txt","w"))==NULL){printf("not open");exit(0);}for(i=0;i<shuliang;i++){fwrite(&student[i], sizeof(student[i]), 1, rs); }if(ferror(rs)){fclose(rs);perror("写文件失败～\n");return;}printf("存储文件成功～\n");fclose(rs);fhzjm();}void DaoChu(){struct student t;int i=0;FILE* fp = fopen("student.txt", "r");shuliang=0;if(NULL==fp){perror("读取文件打开失败～\n");return;}memset(student,0x0,sizeof(student));while(1){fread(&t,sizeof(t),1,fp);if(ferror(fp)){fclose(fp);perror("读文件过程失败～\n");return;}if(feof(fp)){break;}student[i]=t;i++;}fclose(fp);shuliang=i; printf("导出文件成功～\n"); fhzjm();}void menu(){int n=0;system("CLS");printf(" 学生信息管理系统\n");printf(" 作者:陈椿\n");printf("-------------------MENU-----------------\n"); printf(" 1.登记学生信息\n");printf(" 2.删除学生信息\n");printf(" 3.浏览所有已经登记的学生\n");printf(" 4.查找\n");printf(" 4.1按学号查找\n");printf(" 4.2按姓名查找\n");printf(" 4.3按成绩查找\n");printf(" 5.根据总成绩排序\n");printf(" 6.存储到文件\n");printf(" 7.从文件导出\n");printf(" 8.退出系统\n");a: printf(" 请选择:");scanf("%d",&n);switch (n){case 1:DengJi();break;case 2:ShanChu();break;case 3:LiuLan();break;case 4:ChaZhao();break;case 5:PaiXu();break;case 6:CunChu();break;case 7:DaoChu();break;case 8:exit(0);break;default:{printf("请输入1-8之间的数字，谢谢～\n"); goto a;}}}main() {menu();}。