daiam2.txt

#include<iostream>
#include <stdio.h>
#include <fstream>
#include <string.h> 
#include <iomanip>
#include <string>
#define N 20
using namespace std;
struct 
{
char name[20]; //人名
char post[20]; //工作单位
int tel; //电话号码
char email[20]; //email地址
}TelInfo;
void menu();
 void addrecord()
{
  char ch;
 ofstream ofile("Result.txt",ios_base::out);
  do
   {
    cout<<"请输入通讯录信息"<<endl;
    cin>>TelInfo.name>>TelInfo.post>>TelInfo.tel>>TelInfo.email;
    ofile<<TelInfo.name<<"  "<<TelInfo.post<<"  "<<TelInfo.tel<<"  "<<TelInfo.email<<endl;
 cout<<"have another student record(y/n))?"<<endl;

 std::cin>>ch;
   }while(ch=='y');
   ofile.close();
}

void  changecord()
{
    ifstream da("Result.txt", ios_base::in);string str; bool flag = true;
 ofstream data("return.txt", ios_base::out);
 char a[20];
 if (!da)
    {
        cout<<"找不到文件!!!!"<<endl;
        return;
    }
 cout<<"请输入你要修改人的姓名"<<endl;
 cin>>a;
 while ( da>>TelInfo.name)
    {  
        getline(da, str);
        
        if (strcmp(TelInfo.name,a)==0)
        {
            cout<<"你想修改的联系人:" <<endl;
            cout<<TelInfo.name<<"  "<<str<<endl;
   flag=false;
            break;
        }
        
        data<<TelInfo.name
            <<" "<<str<<endl;
    }
 if(flag)cout<<"没有该人"<<endl;
 else
 {
        while (getline(da, str))
        {
            data<<str <<endl;
        }
        da.close();
        data.close();
        ifstream in("return.txt", ios::in);
        ofstream out("Result.txt", ios::out);
        if (!out || !in)
        {
            cout<<endl<<"对不起不能打开文件!!!"<<endl<<endl;
            return;
        }
        while (getline(in, str))
        {
            out<<str<<endl;
        } 
        
        in.close();
        ofstream change("Result.txt",ios_base::app);
  cout<<"请输入修改的信息"<<endl;
        cin>>TelInfo.name>>TelInfo.post>>TelInfo.tel>>TelInfo.email;
        out<<TelInfo.name<<"  "<<TelInfo.post<<"  "<<TelInfo.tel<<"  "<<TelInfo.email<<endl;
        cout<<"这个人的信息已经从你的通迅录中修改!!!" <<endl;out.close();

 }
}
void delrecord()
{
  ifstream da("Result.txt", ios_base::in);string str; bool flag = true;
 ofstream data("return.txt", ios_base::out);
 char a[20];
 if (!da)
    {
        cout<<"找不到文件!!!!"<<endl;
        return;
    }
 cout<<"请输入你要删除人的姓名"<<endl;
 cin>>a;
 while ( da>>TelInfo.name)
    {  
        getline(da, str);
      if (strcmp(TelInfo.name,a)==0)
        {
            cout <<endl <<"你想删除的联系人:" <<endl;
            cout<<TelInfo.name<<"  "<<str<<endl;
   flag=false;
            break;
        }
        
        data<<TelInfo.name
            <<" "<<str<<endl;
    }
 if(flag)cout<<"没有该人"<<endl;
 else
 {
        while (getline(da, str))
        {
            data<<str <<endl;
        }
        da.close();
        data.close();
        ifstream in("return.txt", ios::in);
        ofstream out("Result.txt", ios::out);
        if (!out || !in)
        {
            cout<<endl<<"对不起不能打开文件!!!"<<endl<<endl;
            return;
        }
        while (getline(in, str))
        {
            out<<str<<endl;
        } 
        out.close();
        in.close();
    cout <<endl <<"这个人的信息已经从你的通迅录中删除!!!" <<endl <<endl;

 }

}
void printcord()
{
 char ch;
 ifstream da("Result.txt");
     cout<<"人名 "<<"工作单位 "<<"电话"<<" 地址"<<endl;
 while (da.get(ch))
    cout << ch;
    da.close();

}
void searchcord()
{
 char a[20],b[20];int n,m;  ifstream da("Result.txt");
 cout<<"请输入要查找方式:";
 cout<<"1.姓名:";
 cout<<"2.电话号码:";
 cin>>n;
 if(n==1)
 {
        cout<<"请输入要查询的姓名"<<endl;
        cin>>a;
  while(da.eof()==0)
  {
         da>>TelInfo.name>>TelInfo.post>>TelInfo.tel>>TelInfo.email;
         if(strcmp(TelInfo.name,a)==0)
   {
                cout<<"人名 "<<"工作单位 "<<"电话"<<" 地址"<<endl;
              cout<<TelInfo.name<<"  "<<TelInfo.post<<"  "<<TelInfo.tel<<"  "<<TelInfo.email<<endl;
   }
  } 
  da.close();
 }
 if(n==2)
 {
  cout<<"请输入要查询的电话"<<endl;
        cin>>m;
  while(da.eof()==0)
  {
         da>>TelInfo.name>>TelInfo.post>>TelInfo.tel>>TelInfo.email;
         if(TelInfo.tel==m)
   {
                cout<<"人名 "<<"工作单位 "<<"电话"<<" 地址"<<endl;
              cout<<TelInfo.name<<"  "<<TelInfo.post<<"  "<<TelInfo.tel<<"  "<<TelInfo.email<<endl;
   }
  } 
  da.close();
 }

    
}
void main()
{
 menu();
}
void menu()
{
   int i;
    for(;;){
        std::cout<<"通讯录管理系统字符界面版"<<std::endl;
  std::cout<<"##################################"<<std::endl;
        std::cout<<"请选择操作:"<<std::endl;
        std::cout<<"\t1.添加记录"<<std::endl;
        std::cout<<"\t2.修改记录"<<std::endl;
        std::cout<<"\t3.删除记录"<<std::endl;
        std::cout<<"\t4.数据显示"<<std::endl;
        std::cout<<"\t5.查询记录"<<std::endl;
  std::cout<<"\t6.退出"<<std::endl;
        std::cin>>i;
        if(!std::cin.good()){
            std::cout<<"非法输入!"<<std::endl;
            std::cin.clear();
        }
        switch(i){
            case 1:
                addrecord();break;
            case 2:
                changecord();
                break;
            case 3:
                delrecord();
                break;
            case 4:
                printcord();
                break;
            case 5:
                searchcord();
                break;
            case 6:
                return;
           default:
                std::cout<<"错误的选项!"<<std::endl;
        }
    }

}