通讯录系统，分文件写，文件存储

主要应用了，函数的重载，类的继承，纯虚函数（虚函数），文件输入输出，运算符的重载，分文件实现等等。
可以在包含源文件和头文件的文件夹中创建2个txt文档，一个叫Phone.txt
一个叫PhoneCar.txt
目的是为了存储数据。

实现效果图：

下面是源文件，创建多个源文件
main.cpp

#include 
#include"Phonecar.h"
#include"Phone.h"
#include"shown.h"
#include"Phone_List.h"
#include"PhoneCar_List.h"
#include"People.h"
using namespace std;
int main()
{ People t;
while(true)
{ show();
cout<<"请输入数字"<>a;
switch(a)
{ case 0:return 0;
case 1:t.add();
break;
case 2: t.de();
break;
case 3:t.my();
break;
case 4:t.finds();
break;
case 5:t.display();
break;
case 6:t.exchange_car1();
break;
case 7:t.exchange_car2();
break;
case 8:t.copy_car1();
break;
case 9:t.copy_car2();
break;
default:cout<<"输入错误，退出系统"< 
List.cpp
 
#include"List.h"
 void list1::add()
{

}
 void list1::de()
{

}
 void list1::display()
{

}
 void list1::finds()
{

}
 void list1::my()
{

}

 
People.cpp
 
#include"People.h"
#include
class p
{ public:
    string name1,number1;
};
int b;
using namespace std;
void People::add()  //
{ list1 *temp;
cout<<"1,添加到手机卡，2添加到手机"<>a;
switch(a)
{ case 1:{temp=&car2;
temp->add();
break;}
case 2:{temp=&car1;
temp->add();
break;}
default:cout<<"输入错误，退出"<>a;
switch(a)
{case 1:{
    temp=&car2;
temp->de();
break;}
case 2:{
temp=&car1;
temp->de();
break;}
default:cout<<"输入错误，退出"<>a;
switch(a)
{case 1:{temp=&car2;
temp->display();
break;}
case 2:{temp=&car1;
temp->display();
break;}
default:cout<<"输入错误，退出"<>a;
switch(a)
{case 1:{temp=&car2;
temp->finds();
break;}
case 2:{temp=&car1;
temp->finds();
break;}
default:cout<<"输入错误，退出"<>a;
switch(a)
{case 1:{temp=&car2;
temp->my();
break;}
case 2:{temp=&car1;
temp->my();
break;}
default:cout<<"输入错误，退出"<手机卡
{  int a=car2.count2();//手机卡numb
     if(a+car1.count1()>1005)
     {
         cout<<"容量不足，操作失败"<1005)
{ cout<<"容量已满，操作失败"< 
Phone.cpp
 
#include"Phone.h"
istream &operator>>(istream &in,Phone &A)
{
 cout<<"请输入姓名，手机号，地址，QQ号"<>A.name>>A.number>>A.address>>A.Qid;
return in;
}
ostream &operator<<(ostream &out,Phone &B)
{
  out< 
Phone_List.cpp
 
#include"Phone_List.h"
#include
#include
void swap2(Phone &a,Phone &b)  //交换删除后的信息
{Phone c;
c.name=a.name;
c.address=a.address;
c.Qid=a.Qid;
c.number=a.number;
a.name=b.name;
a.address=b.address;
a.Qid=b.Qid;
a.number=b.number;
b.name=c.name;
b.address=c.address;
b.Qid=c.Qid;
b.number=c.number;
}
 Phone_list::Phone_list()    //从文本文件中读信息并创建数组
{
    for(int i=0;i<1005;i++)
    {

     Car1[i].address=" ";
      Car1[i].name=" ";
       Car1[i].number=" ";
        Car1[i].Qid=" ";
     }

ifstream in("Phone.txt");
if(!in)
{
    cout<<"打开失败"<>Car1[i].name>>Car1[i].number>>Car1[i].address>>Car1[i].Qid&&EOF)
{
    i++;
}
num=i;
in.close();
}
 Phone_list::~Phone_list()  //写入文本文档
{ ofstream out("Phone.txt");
  if(!out)
  {
      cout<<"打开文件失败"<>a;
    if(a==0)
    break;
    if(num>1005)
    {cout<<"容量已满，无法添加"<>Car1[num];
    num+=1;
    system("pause");
          system("cls");
}
}
void Phone_list::de()    //删除
{ cout<<"请检查一下手机卡联系人中是否也有此人"<>a;
    if(a==0)
      break;
cout<<"请输入要删除联系人的手机号"<>b;
int ans=0;
for(int i=1;i>a;
    if(a==0)
        break;
        cout<<"请输入要查找联系人的手机号"<>b;
int ans=0;
for(int i=1;i>a;
    if(a==0)
       break;
cout<<"请输入要修改联系人的手机号"<>b;
int ans=0;
for(int i=1;i>Car1[i];
    ans++;
    cout<<"修改成功"< 
PhoneCar.cpp
 
#include"Phonecar.h"
istream &operator>>(istream &input,Phonecar &A)
{
    cout<<"请输入姓名，手机号"<>A.name>>A.number;
return input;
}
ostream &operator<<(ostream &out,Phonecar &B)
{
  out<>a;
   switch(a)
   {case 1:{string p;
    cin>>p;
    name=p;
    break;}
    case 2:{string u;
    cin>>u;
    number=u;
    break;
    }
    default: break;
   }
}

 
PhoneCar_List.cpp
 
#include"PhoneCar_List.h"
#include
#include
using namespace std;
void swap1(Phonecar &a,Phonecar &b)
{ Phonecar c;
    c.name=a.name;
    c.number=a.number;
    a.name=b.name;
    a.number=b.number;
    b.number=c.number;
    b.name=a.name;
}
 PhoneCar_List::PhoneCar_List()    //从文本文件中读信息并创建数组
{ for(int i=0;i<1005;i++)
{
     Car2[i].name=" ";
     Car2[i].number=" ";
}
    ifstream in("PhoneCar.txt");
if(!in)
{
    cout<<"打开失败"<>Car2[i].name>>Car2[i].number&&EOF)
{
    i++;
}
numb=i;
in.close();
}
 PhoneCar_List::~PhoneCar_List()  //写入文本文档
{ ofstream out("PhoneCar.txt");
  if(!out)
  {
      cout<<"打开文件失败"<>a;
      if(a==0)
        {return;}
        if(numb>1005)
            {cout<<"容量已满，无法添加"<>Car2[numb];
          numb+=1;
          system("pause");
          system("cls");
}
}
void PhoneCar_List::de()    //删除
{ while(true)
{
     int a;
   cout<<"1、删除，0、退出"<>a;

        if(a==0)
       {break;}
  cout<<"请输入要删除联系人的手机号"<>b;
   int ans=0;
   int c=0,i;

for( i=1;i>a;
        if(a==0)
        {break;}
        cout<<"请输入要查找联系人的手机号"<>b;
      int ans=0;
    for(int i=1;i>a;
    if(a==0)
       {
       break;}
cout<<"请输入要修改联系人的手机号"<>b;
   int ans=0;
  for(int i=1;i>Car2[i];
    ans++;
    cout<<"修改成功"< 
shown.cpp
 
#include"shown.h"
#include
using namespace std;
void show()
{
    cout<<"********欢迎使用通讯录系统*************"< 
下面是源文件对应的头文件
 List.h
 
#ifndef LIST_H_INCLUDED
#define LIST_H_INCLUDED
class list1                 //通讯录
{public:
virtual void add()=0;                    //添加联系人
virtual void de()=0;                 //删除联系人
virtual void display()=0;                 // 显示全部联系人
virtual void my()=0;           //   修改联系人
virtual void finds()=0; // 搜索并显示联系人
};


#endif // LIST_H_INCLUDED

 
List1.h
 
#ifndef LIST1_H_INCLUDED
#define LIST1_H_INCLUDED
class list1                 //通讯录
{public:
virtual void add()=0;                       //添加联系人
virtual void de()=0;                    //删除联系人
virtual void display()=0;                  // 显示全部联系人
virtual void my()=0;             //   修改联系人
virtual void finds()=0;  // 搜索并显示联系人
};


#endif // LIST1_H_INCLUDED

 
People.h
 
#ifndef PEOPLE_H_INCLUDED
#define PEOPLE_H_INCLUDED
#include"Phone_List.h"
#include"PhoneCar_List.h"
#include"List.h"
class People
{public:
    Phone_list car1;
    PhoneCar_List car2;
     void add();   //添加
    void de();    //删除
    void display();  // 展示
    void my();    // 修改
    void finds();  //  查找
    void exchange_car1();   //手机->手机卡
    void exchange_car2();  // 手机卡->手机
    void copy_car1();   //手机复制->手机卡
    void copy_car2();   //手机卡复制->手机

};


#endif // PEOPLE_H_INCLUDED

 
Phone.h
 
#ifndef PHONE_H_INCLUDED
#define PHONE_H_INCLUDED
#include"Phonecar.h"
class Phone :public Phonecar     //手机类
{
public:
string address,Qid;
Phone(string c="0",string d="0",string a="0",string b="0")
{ name=a;
number=b;
address=c;
Qid=d;
}
void set(string a,string b,string c,string d);
void moidfy();
friend istream &operator>>(istream &in,Phone &A);
friend ostream &operator<<(ostream &out,Phone &B);
};
istream &operator>>(istream &in,Phone &A);
ostream &operator<<(ostream &out,Phone &B);



#endif // PHONE_H_INCLUDED

 
Phone_List.h
 
#ifndef PHONE_LIST_H_INCLUDED
#define PHONE_LIST_H_INCLUDED
#include"List.h"
#include"Phone.h"
using namespace std;
class Phone_list:public list1
{public:
    int num;
    Phone Car1[1005];
    Phone_list();
    ~Phone_list();
    void add();   //
   void de();    //
    void display();  //
    void my();    //
    void finds();  //
    int count1();
};


#endif  PHONE_LIST_H_INCLUDED

 
Phonecar.h
 
#ifndef PHONECAR_H_INCLUDED
#define PHONECAR_H_INCLUDED
#include
using namespace std;
class Phonecar     //手机卡类
{
public:
string name;
string number;
Phonecar(string a="s",string b="s",int c=0)
{name=a;
number=b;
}
void set(string c,string b);
void moidfy();
friend istream &operator>>(istream &in,Phonecar &A);
friend ostream &operator<<(ostream &out,Phonecar &B);
};
istream &operator>>(istream &input,Phonecar &A);
ostream &operator<<(ostream &out,Phonecar &B);


#endif // PHONECAR_H_INCLUDED

 
PhoneCar_List.h
 
#ifndef PHONECAR_LIST_H_INCLUDED
#define PHONECAR_LIST_H_INCLUDED
#include"List"
#include 
#include"Phonecar.h"
#include"List.h"
//#include"Phone.h"
//#include"Phone_List.h"
#include"PhoneCar_List.h"
class PhoneCar_List:public list1
{ public:
    int numb;
   Phonecar Car2[1005];
    PhoneCar_List();
    ~PhoneCar_List();
    void add();   //添加
    void de();    //删除
    void display();  // 展示
    void my();    // 修改
    void finds();  //  查找
    int count2();  //返回numb值
};
#endif // PHONECAR_LIST_H_INCLUDED

 
shown.h
 
#ifndef SHOWN_H_INCLUDED
#define SHOWN_H_INCLUDED
void show();

#endif // SHOWN_H_INCLUDED

 

 上图为文件在磁盘中的情况，
 下图器在编译器中的代码情况