学生信息管理系统源代码

#include "conio.h"#include <stdio.h>#include<stdlib.h>#define MAX 30/*日期结构体类型*/typedef struct{int year;int month;int day;}DATE;/*学生结构体类型*/typedef struct{int num;char name[10];char sex[10];DATE birthday;int score ;}STU;int read_file(STU students[]){ FILE*fp;int i=0;if((fp=fopen("lab.txt","rt"))==NULL) {printf("\n\n*****库文件不存在!请重建");return 0;}while(feof(fp)!=1){fread(&students[i],sizeof(STU),1,fp);if(students[i].num==0)break;elsei++;}fclose(fp);return i;}void save_file(STU students[],int sum){ FILE *fp;int i;if((fp=fopen("lab.txt","wb"))==NULL) { printf("读文件错误!\n");return;}for(i=0;i<sum;i++)if(fwrite(&students[i],sizeof(STU),1,fp)!=1) printf("写文件错误!\n");fclose(fp);}/*输入模块*/int input(STU students[]){int i=0,sum;system("cls");printf("\n\n 录入学生个数\n\n");scanf("%d",&sum);printf("\n\n 录入学生信息\n",MAX);printf("\n\n ----------------------\n") ;for(i=0;i<sum;i++){ printf("\n第%d个人",i+1) ;printf("\n\n 学号");scanf("%d",&students[i].num) ;printf("\n\n 姓名") ;scanf("%s",&students[i].name);printf("\n\n 性别");scanf("%s",&students[i].sex);printf("\n\n 出生日期") ;printf("\n\n 年");scanf("%d",&students[i].birthday.year);printf("\n\n 月");scanf("%d",&students[i].birthday.month);printf("\n\n 日");scanf("%d",&students[i].birthday.day);printf("\n\n 成绩");scanf("%d",&students[i].score );}printf("\n---%d个学生信息输入完毕---\n",i);printf("---按任意键返回主菜单---") ;return i;}/*输出模块*/void output(STU students[],int sum){system("cls");{ int i=0;for(i=0;i<sum;i++){printf("\n -------学生信息------- \n");printf("学号姓名性别出生日期成绩\n");printf("------------------------------- \n");printf("%4d %10s %8s %15d-%2d-%2d %3d\n",students[i].num,students[i].name,students[i].sex,students[i].birthday.year,students[i].birthday.month,students[i].birthday.day,students[i].score );}}printf("按任意键返回主菜单\n");getch();}/*添加模块*/int append(STU students[],int sum){ system("cls");{int i,j;printf("请输入要添加的学生数量:\n");scanf("%d",&j);for(i=sum;i<sum+j;i++){ printf("---按格式输入提示内容:\n");printf("请输入学号:\n");scanf("%d",&students[i].num);printf("请输入姓名:\n");scanf("%s", &students[i].name );printf("请输入性别:\n");scanf("%s",&students[i].sex);printf("请输入出生日期:\n");scanf("%d-%d-%d",&students[i].birthday.year,&students[i].birthday.month,&students[i].birthday.day);printf("请输入成绩:\n") ;scanf ("%d",students[i].score );}printf("%d本信息输入完毕",i);printf("学号姓名性别出生日期成绩\n");printf("------------------------------- \n");printf("%4d %10s %8s %15d-%2d-%2d %3d\n",students[i].num,students[i].name,students[i].sex,students[i].birthday.year,students[i].birthday.month,students[i].birthday.day,students[i].score );printf("按任意键返回主菜单\n");sum=sum+j;return(sum);}}/*修改模块*/void modify(STU students[],int sum){ int i=0,choice,modify_num,flag;do{system("cls") ;printf("\n输入要修改的学生学号\n") ;scanf("%d",&modify_num);for(i=0;i<sum;i++)if(students[i].num==modify_num){printf("\n -------学生信息------- \n");printf("学号姓名性别出生日期成绩\n");printf("------------------------------- \n");printf("%4d %6s %4s %10d-%2d-%2d %6d\n",students[i].num,students[i].name,students[i].sex,students[i].birthday.year,students[i].birthday.month,students[i].birthday.day,students[i].score );printf(" \n 您要修改那一项\n ");printf(" \n 1 学号\n ");printf(" \n 2 姓名\n ");printf(" \n 3 性别\n ");printf(" \n 4 出生日期\n ");printf(" \n 5 成绩\n ");printf(" \n 请选择(1-4): \n ");scanf ("%d",&choice);switch(choice){case 1:printf("\n 输入修改后的学号：");scanf("%d",&students[i].num); break;case 2:printf("\n 输入修改后的姓名：");scanf("%s",&students[i].name); break;case 3:printf("\n 输入修改后的性别：");scanf("%s",&students[i].sex); break;case 4:printf("\n 输入修改后的出生日期");scanf("%d-%d-%d",&students[i].birthday.year,&students[i].birthday.month,&students[i].birthday.day); break;case 5:printf("\n 输入修改后的成绩：");scanf("%d",&students[i].score); break;}printf("\n -------该学生信息------- \n");printf("学号姓名性别出生日期成绩\n");printf("------------------------------- \n");printf("%4d %6s %4s %10d-%2d-%2d %6d\n",students[i].num,students[i].name,students[i].sex,students[i].birthday.year,students[i].birthday.month,students[i].birthday.day,students[i].score );break;}if(i==sum){printf("\n 该学号不存在" );// bioskey(0);}printf("\n\n 继续修改吗？(Y/N) ");choice=getch();if(choice=='Y'||choice=='y'){flag=1;printf("\n 继续!\n");}else flag=0;}while(flag==1);printf("\n---按任意键返回主菜单---\n");//bioskey(0);}/*删除模块*/void del(STU students[],int sum){int i;int j;int del_num;system("cls") ;printf("\n输入要删除的学生学号\n") ;scanf("%d",&del_num);for(i=0;i<sum;i++)if(students[i].num==del_num) break;for(j=i;j<sum;j++)students[j] =students[j+1];}/*查询模块*/void inquire(STU students[],int sum){ int i=0,choice,inquire_num,flag;do{ system("cls") ;printf("\n输入要查询的学生学号\n") ;scanf("%d",&inquire_num);for(i=0;i<sum;i++)if(students[i].num==inquire_num){ printf("\n -------该学生信息------- \n");printf("学号姓名性别出生日期成绩\n");printf("------------------------------- \n");printf("%4d %6s %4s %10d-%2d-%2d %6d\n",students[i].num,students[i].name,students[i].sex,students[i].birthday.year,students[i].birthday.month,students[i].birthday.day,students[i].score ); break;}if(i==sum){printf("\n 该学号不存在" );//bioskey(0);}printf("\n\n 继续查询吗？(Y/N) ");choice=getch();if(choice=='Y'||choice=='y'){flag=1;printf("\n 继续!\n");}else flag=0;}while(flag==1);printf("\n---按任意键返回主菜单---\n");//bioskey(0);}/*排序模块*/void sort(STU students[],int sum){STU t;int i,j,k;system("cls") ;printf("\n------------------库行排名--------------------------\n");printf("\n----------------------------------------------------\n");printf("\n 排名学号姓名性别出生日期\n ") ;for(i=0;i<sum;i++){ k=i;for(j=i+1;j<sum;j++)if (students[i].score>students[j].score) k=j;if (k!=i){t=students[i];students[i]=students[k];students[k]=t;}}output(students, sum);//bioskey(0);}void main(){ STU students[MAX];int choice,sum;sum=read_file(students);if(sum==0){ printf("****并录入基本库存信息！****\n");getch();sum=input(students);}do{system("cls");printf("\n\n\n ****学生管理系统*****\n\n") ; printf(" 1 添加学生信息\n\n") ;printf(" 2 修改学生信息\n\n") ;printf(" 3 删除学生信息\n\n") ;printf(" 4 打印学生信息\n\n") ;printf(" 5 查询学生信息\n\n") ;printf(" 6 排序学生信息\n\n") ;printf(" 0 退出系统\n\n\n") ;printf(" 请选择(0-6):") ;scanf("%d",&choice) ;switch (choice){case 1:sum=append(students,sum); break;case 2:modify(students,sum); break;case 3:del(students,sum); break;case 4:output(students,sum); break;case 5:inquire(students,sum);break;case 6:sort(students,sum); break;case 0: break;}}while(choice!=0);save_file(students,sum);}。