学籍管理系统代码

#include <iostream>#include <string>#include <iomanip>using namespace std;struct node{string name;string num;int math;int english;int cpp;int pe;string vb;int sum;int average;node*next;};node* creat() /*建立数据的函数*/ {node*p,*q,*h;int j;p=0;cout<<"☆☆☆请输入你要统计信息的学生人数☆☆☆\n";cin>>j;if (j==0){cout<<"***至少录入1个学生的信息,请重新输入要录入的学生人数***\n";cin>>j;}if (j!=0){cout<<"数据创建中......\n";cout<<"请输入各科成绩：\n";cout<<" "<<"学号"<<" "<<"姓名"<<" "<<"数学"<<" "<<"英语"<<" "<<"c++"<<" "<<"体育"<<" "<<"vb"<<endl;if (p==0){p=new node;h=p;q=p;cin>>p->num>>p->name>>p->math>>p->english>>p->cpp>>p->pe>>p->vb;for (int i=1;i<j;i++){p=new node;cin>>p->num>>p->name>>p->math>>p->english>>p->cpp>>p->pe>>p->vb;q->next=p;q=p;}}cout<<"****数据库创建成功****\n";q->next=0;return h;}node* del(struct node *head, string x) /*删除数据函数*/ { struct node *p,*q;char yesno;if (head==NULL){ cout<<"***这是一个空的数据库,没有数据可以删除!***\n"; return head;}p=head;{while (p->num!=x&&p->next!=NULL){ q=p;p=p->next; }if (p->num==x){cout<<"你确定要删除该学生的信息吗?(y/n)";cin>>yesno;if (yesno=='y'){if (p==head)head=p->next;elseq->next=p->next;delete p;cout<<"该学生信息已经删除!\n";}}elsecout<<"☆☆☆没有找到你查找的学生信息☆☆☆\n";}return head;node* addition(node*h) /*添加数据函数*/{node*p,*q;q=h;p=new node;if (h==NULL)cout<<"***对不起！该数据库中还没有数据，请先建立数据库再进行数据的添加!***\n"; if(h!=NULL){while(q->next!=NULL)q=q->next;q->next=p;p->next=NULL;cout<<"你输入你要添加的数据：\n";cout<<" "<<"学号"<<" "<<"姓名"<<" "<<"数学"<<" "<<"英语"<<" "<<"c++"<<" "<<"体育"<<" "<<"vb"<<endl;cin>>p->num>>p->name>>p->math>>p->english>>p->cpp>>p->pe>>p->vb;cout<<"*****数据添加成功*****\n";}return h;}node*found(struct node *head, string x) /*查找信息函数*/{struct node *p,*q;struct node *h;p=head;if (p==NULL){cout<<"★★★对不起!数据库中没有任何数据，请先录入信息★★★\n";}if (p!=NULL){while (p->num!=x&&p->next!=NULL){ q=p;p=p->next; }if (p->num==x){cout<<"★★★你查找学生的信息为★★★\n";cout<<"学号"<<" "<<"姓名"<<" "<<"数学"<<" "<<"英语"<<" "<<"c++"<<" "<<"体育"<<" "<<"vb"<<" "<<"总分"<<" "<<"平均分"<<endl;cout<<p->num<<" "<<p->name<<" "<<p->math<<" "<<p->english<<" "<<p->cpp<<" "<<p->pe<<" "<<p->vb<<" "<<p->sum<<" "<<p->average<<endl;}elsecout<<"★★★没有查找学生的信息★★★\n";}h=head;return h;}node* sum(node*p) /*求总成绩函数*/{node*q;q=p;while(q!=NULL){q->sum=q ->math+q ->english+q->cpp+q ->pe;q=q->next;}return p;}node* average(node*p) /*求平均成绩函数*/{void printd(node*);node*sum(node*);sum(p);node*q;q=p;while(q!=NULL){q->average=(q ->math+q ->english+q->cpp+q ->pe)/4;q=q->next;}return p;}void printd(node*h) /*输出数据的函数*/ {node*sum(node*);node*average(node*);node*q;q=h;sum(q);if (h==NULL)cout<<"★★★对不起!数据库中没有任何数据，请先录入信息★★★\n"; while(q!=NULL){cout<<" "<<"学号"<<" "<<"姓名"<<" "<<"数学"<<" "<<"英语"<<" "<<"c++"<<" "<<"体育"<<" "<<"vb"<<" "<<"总分"<<" "<<"平均分"<<endl; cout<<q->num<<" "<<q->name<<" "<<q->math<<" "<<q->english<<" "<<q->cpp<<" "<<q->pe<<" "<<q->vb<<" "<<q->sum<<" "<<q->average<<endl;q=q->next;}}node*arrange(node*p) /*排序函数*/{void printd(node*);node*average(node*);average(p);node*q,*h;int t1,t2,t3,t4,t6,t7;string t5,t8,t9;q=p;while(q!=NULL){h=q->next;while(h!=NULL){if (q->sum<h->sum){t1=q->average;q->average=h->average;h->average=t1;t2=q->cpp;q->cpp=h->cpp;h->cpp=t2;t3=q->english;q->english=h->english;h->english=t3;t4=q->math;q->math=h->math;h->math=t4;t5=q->name;q->name=h->name;h->name=t5;t6=q->pe;q->pe=h->pe;h->pe=t6;t7=q->sum;q->sum=h->sum;h->sum=t7;t8=q->vb;q->vb=h->vb;h->vb=t8;t9=q->num;q->num=h->num;h->num=t9;}h=h->next;}q=q->next;}printd(p);return p;}node* excellent(node*p) /*平均分优秀学生数函数*/ {int i=0;node*q;q=p;while(q!=NULL){if (q->average>=90)i=i++;q=q->next;}cout<<"★★★平均分为优秀学生人数为"<<i<<"个人★★★\n";return q;}node *rewrite(node*head,string x){node*p,*h;p=head;if (p==NULL){cout<<"◆◆◆对不起!数据库中没有任何数据，请先录入信息◆◆◆\n";}if (p!=NULL){while (p->num!=x&&p->next!=NULL)p=p->next;if (p->num==x){cout<<"★★★你输入修改后的数据★★★\n";cin>>p->vb;cout<<"***修改成功***\n";}elsecout<<"★★★没有找到你要修改信息的学生★★★\n";}h=head;return h;}void menu(){cout<<" ☆━☆━☆━☆━☆━☆━☆━☆━☆━☆━☆━☆━☆━☆━☆━☆━☆\n";cout<<" ╔══════════════════════╗\n"; cout<<" ☆学籍管理系统☆\n"; cout<<" ╚══════════════════════╝\n"; cout<<"╭─────────程序功能─────────╮╭───设计员信息───╮\n";cout<<"││││"<<endl;cout<<"◇"<<" "<<"1.输入学生的姓名、学号和五门课的考试成绩"<<" "<<" ◇☆09级计算机网络技术☆"<<endl;cout<<"│"<<" "<<"2.输出学生的信息"<<" "<<" │││"<<endl;cout<<"│"<<" "<<"3.计算每个学生的平均成绩"<<" "<<" ││余艺│"<<endl;cout<<"◇"<<" "<<"4.统计平均成绩为优秀的学生人数"<<" "<<" ◇☆张廷☆"<<endl;cout<<"│"<<" "<<"5.查询学生的信息（以学号为关键字）"<<" "<<" ││张辉荣│"<<endl;cout<<"│"<<" "<<"6.将学生的成绩按降序排列（以总分为准）"<<" "<<" ││黄小凤│"<<endl;cout<<"◇"<<" "<<"7.添加学生的信息（姓名、学号和成绩）"<<" "<<" ◇☆杨贵华☆"<<endl;cout<<"│"<<" "<<"8.根据学号删除学生的信息"<<" "<<" │││"<<endl;cout<<"│"<<" "<<"9.修改学生信息"<<" "<<" │││"<<endl;cout<<"◇"<<" "<<"0.退出程序"<<" "<<" ◇☆谢谢你的使用！☆"<<endl;cout<<"││││"<<endl;cout<<"╰──────────────────────╯╰────────────╯\n";cout<<" ★━★━★━★━★━★━★━★━★━★━★━★━★━★━★━★━★\n";cout<<"───────────────────────────────────────\n";}void data(){}int main(){static node* h;node*sum(node*);int choice;string num;menu();loop:{cout<<"╭─────────────────────────────────────╮\n";cout<<"☆请输入序号进行操作☆\n";cout<<"╰─────────────────────────────────────╯\n";cin>>choice;}switch(choice){case 1: h=creat();sum(h);average(h);system("cls");menu();goto loop;break;case 2: printd(h);system("pause");system("cls");menu();goto loop;break;case 3: average(h);printd(h);system("pause");system("cls");menu();goto loop;break;case 4: excellent(h);system("pause");system("cls");menu();goto loop;break;case 5:{if (h!=NULL){cout<<"◆◆◆请输入要查找学生的学号:◆◆◆\n";cin>>num;}found(h,num);system("pause");system("cls");menu();goto loop;break;}case 6: arrange(h);system("pause");system("cls");menu();goto loop;break;case 7: addition(h);average(h);system("pause");system("cls");menu();goto loop;break;case 8:{if (h!=NULL){cout<<"∞╬══→请输入要删除学生信息的学号:←══╬∞\n";cin>>num;}h=del(h,num);system("pause");system("cls");menu();goto loop;break;}case 9: data();system("pause");system("cls");menu();goto loop;break;case 10:cout<<"***请输入你要修改信息的学生学号***\n";cin>>num;h=rewrite(h,num);system("pause");system("cls");menu();goto loop;break;case 0: cout<<"*********谢谢使用Andrew lee制作的小程序*********\n";system("pause");exit(1);}return 0;}。