#include <iostream>
#include<string>
#include<vector>
using namespace std;
struct book
{
string name;
string phoneNumber;
int QQ;
string address;
string mailbox;
};
void search(vector<book> TX);
void change(vector<book>&TX);
void DEL(vector<book> &TX);
int main()
{
int j;
bool flag=0;
vector<book> TX;
book temp;
int choice;
while(true)
{
cout<<"〓〓〓〓〓〓〓〓●●●●●●●●●〓〓〓〓〓〓〓〓〓〓"<<endl;
cout<<"★ ≡≡≡≡≡≡≡≡≡≡≡ ★"<<endl;
cout<<"★ || 1.号码输入 || ★"<<endl;
cout<<"★ || 2.号码查询 || ★"<<endl;
cout<<"★ || 3.号码修改 || ★"<<endl;
cout<<"★ || 4.号码删除 || ★"<<endl;
cout<<"★ || 5.显示所有联系人 || ★"<<endl;
cout<<"★ || 6.退出程序 || ★"<<endl;
cout<<"★ ≡≡≡≡≡≡≡≡≡≡≡ ★"<<endl;
cout<<"〓〓〓〓〓〓〓〓●●●●●●●●●〓〓〓〓〓〓〓〓〓★"<<endl;
cout<<endl<<"请进行选择(1-6): ";
while(true)
{
cin.sync();
cin.clear();
cin>>choice;
if(!(choice==1 || choice==2 || choice==3|| choice==4|| choice==5|| choice==6))
{
cout<<"请输入正确的号码：";
}
else
{
break;
}
}
switch(choice)
