自己用c++写的简单成绩管理系统框架

#include<iostream>

 #include<fstream>

 #include<iomanip>

 #include<string>

 #include<windows.h>

 using namespace std;



 void color(const unsigned short color1)

 {        

     if(color1>=0&&color1<=15)

         SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), color1);

     else

         SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), 7);

 }




 //个人信息的类

 class information

 {

 public:

     string name,num,phone,id,sex;  //name是姓名，num是学号，age年龄,sex性别，phone是电话号码,id是身份证号码

     int age;


     information(string na="0",string nu="0",int ag=0,string se="0",string ph="0",string i="0"):name(na),num(nu),age(ag),sex(se),phone(ph),id(i){}//构造函数，初值均赋为零


     //各项数据的输入

     void inputname(string na){name=na;}

     void inputnum(string na){num=na;}

     void inputage(int na){age=na;}

     void inputsex(string na){sex=na;}

     void inputphone(string na){phone=na;}

     void inputid(string na){id=na;}


     //各项数据的输出

     string outputname(){return name;}

     string outputnum(){return num;}

     int outputage(){return age;}

     string outputsex(){return sex;}

     string outputphone(){return phone;}

     string outputid(){return id;}

 };



 //存放学生成绩的类

 class grade

 {

 public:

     double clang,eng,math;   //clang就是c++


     grade(double a=0,double b=0,double c=0):clang(a),eng(b),math(c){}


     //输入成绩

     void inputclang(double a){clang=a;}

     void inputeng(double a){eng=a;}

     void inputmath(double a){math=a;}


     //返回成绩

     double outputclang(){return clang;}

     double outputeng(){return eng;}

     double outputmath(){return math;}

 };


 class student:public information,public grade  //学生类

 {

 public:

     static int a;

     student *next;

     student(){a++;}

     void print();   //输出成绩

     ~student(){a--;}

 };


 void student::print()

 {

     //color(6);

      cout<<"姓名是"<<outputname()<<endl

          <<"学号是"<<outputnum()<<endl

          <<"年龄是"<<outputage()<<endl

          <<"性别是"<<outputsex()<<endl

          <<"电话是"<<outputphone()<<endl

          <<"身份证号是"<<outputid()<<endl

          <<"c++成绩是"<<outputclang()<<endl

          <<"英语成绩是"<<outputeng()<<endl

          <<"数学成绩是"<<outputmath()<<endl;

     // color(16);

 }



 student *the,*head;


 int student::a=0;


 void add()  //增加数据 

 {

     string a;

     int b;

     double c;

     if(!head)

     {

         head=new student;

         the=head;

         //在这里开始输入数据

         color(14);

         cout<<"请输入姓名：";cin>>a;the->inputname(a);

         cout<<"请输入学号：";cin>>a;the->inputnum(a);

          cout<<"请输入年龄：";cin>>b;the->inputage(b);

          cout<<"请输入性别：";cin>>a;the->inputsex(a);

          cout<<"请输入电话：";cin>>a;the->inputphone(a);

          cout<<"请输入身份证号：";cin>>a;the->inputid(a);

          cout<<"请输入c++成绩：";cin>>c;the->inputclang(c);

          cout<<"请输入英语成绩：";cin>>c;the->inputeng(c);

          cout<<"请输入数学成绩：";cin>>c;the->inputmath(c);

          color(16);

         the->next=NULL;

     }

     else

     {

         the->next=new student;

         the=the->next;

         //在这里开始输入数据

         color(14);

         cout<<"请输入姓名：";cin>>a;the->inputname(a);

         cout<<"请输入学号：";cin>>a;the->inputnum(a);

          cout<<"请输入年龄：";cin>>b;the->inputage(b);

          cout<<"请输入性别：";cin>>a;the->inputsex(a);

          cout<<"请输入电话：";cin>>a;the->inputphone(a);

          cout<<"请输入身份证号：";cin>>a;the->inputid(a);

          cout<<"请输入c++成绩：";cin>>c;the->inputclang(c);

          cout<<"请输入英语成绩：";cin>>c;the->inputeng(c);

          cout<<"请输入数学成绩：";cin>>c;the->inputmath(c);

          color(16);

         the->next=NULL;

     }

 }


 void del()  //删除，通过学号查询

 {

     student *t;

     string a;

     //color(11);

     cout<<"请输入想删除的学生的学号：";cin>>a;

     //color(16);

     if(head->num==a){head=head->next;return;}

     for(t=head;t->next;t=t->next)

     {

         if(t->next->num==a)

         {

             t->next=t->next->next;

             return;

         }

     }

 }


 void seek() //查询一个学生的各项信息

 {

     student *t;

     string a;

     //color(11);

     cout<<"请输入你想查看的学生的学号：";cin>>a;

     //color(16);

     for(t=head;t;t=t->next)

     {

         if(t->num==a)

         {

             t->print();

             return;

         }

     }

 }


 void change()  //修改学生信息

 {

     student *t;

     string a;

     int b;

     double c;

     //color(12);

     cout<<"输入你想修改信息的学生的学号：";cin>>a;

     //color(16);

     

     for(t=head;;t=t->next)

     {

         if(t->num==a)

         {

         //color(13);

         cout<<"原姓名是"<<the->outputname()<<"   ";

         cout<<"请输入想修改成的姓名：";cin>>a;the->inputname(a);

         cout<<"原学号是"<<the->outputnum()<<"   ";

         cout<<"请输入想修改成的学号：";cin>>a;the->inputnum(a);

         cout<<"原年龄是"<<the->outputage()<<"   ";

          cout<<"请输入想修改成的年龄：";cin>>b;the->inputage(b);

         cout<<"原性别是"<<the->outputsex()<<"   ";

          cout<<"请输入想修改成的性别：";cin>>a;the->inputsex(a);

         cout<<"原电话是"<<the->outputphone()<<"   ";

          cout<<"请输入想修改成的电话：";cin>>a;the->inputphone(a);

         cout<<"原身份证号是"<<the->outputid()<<"   ";

          cout<<"请输入想修改成的身份证号：";cin>>a;the->inputid(a);

         cout<<"原c++成绩是"<<the->outputclang()<<"   ";

          cout<<"请输入想修改成的c++成绩：";cin>>c;the->inputclang(c);

         cout<<"原英语成绩是"<<the->outputeng()<<"   ";

          cout<<"请输入想修改成的英语成绩：";cin>>c;the->inputeng(c);

         cout<<"原数学成绩是"<<the->outputmath()<<"   ";

          cout<<"请输入想修改成的数学成绩：";cin>>c;the->inputmath(c);

         // color(16);

             return;

         }

     }

 }


 void save()

 {

     student *t;

     ofstream outfile("E:\\student.txt",ios::app);

     for(t=head;t;t=t->next)

     {

         outfile<<t;

     }

     outfile.close();

 }


 void shuchu()

 {

     student *t;

     for(t=head;t;t=t->next)

     {

         t->print();

     }

 }





 void main()

 {

     int a;

     //color(10);

     cout<<"请输入一个数字以实现各功能"<<endl<<"输入1：增加。输入2：删除。输入3：查找。输入4：修改。输入5：存盘。输入6：显示。输入7：退出。"<<endl;

     

     while(1)

     {

         cout<<"请输入：";cin>>a;

         switch(a)

         {

             case 1: add();break;

             case 2: del();break;

             case 3: seek();break;

             case 4: change();break;

             case 5: save();break;

             case 6: shuchu();break;

             case 7:save();return;

         }

     }

     system("pause");

 }