telsystem.cpp

电话号码管理系统

#include <iostream>
#include <string>
#include <map>
#include <fstream>
#include <iomanip>

using namespace std;

typedef map < string,  pair<string, int > > TelMap;   
typedef map <int , string>  TelNameMap;  

void printmenu();//打印系统菜单
void Add();     //添加新订户的详细信息
void Modify();  //修改现有订户的详细信息
void Del();     //删除现有订户的详细信息
void DisTel();  //显示根据电话号码查出的订户详细信息
void DisName(); //显示根据订户名查出的订户详细信息
void ViewDir(); //查看目录,显示所有订户详细信息

TelMap telmap;                  //保存订户详细信息的map
TelNameMap telname;             //保存订户号码和姓名的map，用于基于号码的查找

int main()
{

	fstream outfile("telefon.txt", ios::out);
	
	int n;
	printmenu();
	while(cin>>n && n != 7)
	{
		switch(n)
		{
			case 1:
				system("cls");
				cout<<"\t\t"<<"ADD NEW SUBSCRIBER DETAILS"<<endl;
				Add();
				cout<<"Subscriber details have been added"<<endl;
				printmenu();
				continue;
			case 2:
				system("cls");
				Modify();
				cout<<"Subscriber details have been modified"<<endl;
				printmenu();
				continue;
			case 3:
				system("cls");
				cout<<"\t\t"<<"DELETE SUBSCRIBER DETAILS"<<endl;
				Del();
				cout<<"Subscriber details have been deleted"<<endl;
				printmenu();
				continue;
			case 4:
				system("cls");
				DisTel();
				printmenu();
				continue;
			case 5:
				system("cls");
				DisName();
				printmenu();
				continue;
			case 6:
				system("cls");
				ViewDir();
				printmenu();
				continue;
			default:
				system("cls");
				cout<<"The REEOR number"<<endl;
				printmenu();
				continue;
		}
		cout<<endl;
		
	}
	TelMap::iterator pos = telmap.begin ();
	for(int i = 1; pos != telmap.end(); ++pos, ++i)  //写入文件
	{
	
		outfile<<"Record"<<i<<"\t\t"<<pos->first<<"\t"<<pos->second.first<<"\t"<<pos->second.second<<endl;

	}
	cout<<"写入文件成功"<<endl;
	return 0;
}

void printmenu()  //打印系统菜单
{
	cout<<"\t\t"<<"TELEPHONE DIRECTORY SYSTEM"<<endl;
	cout<<"\t"<<"1. Add new subscriber details"<<endl;
	cout<<"\t"<<"2. Modify existing subscriber details"<<endl;
	cout<<"\t"<<"3. Delete existing subscriber details"<<endl;
	cout<<"\t"<<"4. Display subscriber details based on telephone number"<<endl;
	cout<<"\t"<<"5. Display subscriber details based on subscriber name"<<endl;
	cout<<"\t"<<"6. View Directory"<<endl;
	cout<<"\t"<<"7. Quit"<<endl;
	cout<<endl<<"Enter choice:";
}

void Add()             //添加新订户的详细信息
{
	string name, addr;
	int tel;

	cout<<"Enter Subscriber Name(upto 30 chars): ";
	cin>>name;
	cout<<"Enter Subscriber Address(upto 50 chars): ";
	cin>>addr;
	cout<<"Enter Telephone Number: ";
	while(cin>>tel)
	{
		if(tel< 4000000 ||tel> 4999999 )
		{
			cout<<"\t"<<"Subscriber telephone number must be between 4000000 and 4999999 "<<endl;
			cout<<"Enter Telephone Number:";
		}
		else 
			break;
	}

	telmap.insert(make_pair(name, make_pair(addr, tel)));  //存入订户详细信息map
	telname.insert(make_pair(tel, name));                  //存入号码，姓名map
	cout<<endl;

}

void Modify()   //修改现有订户的详细信息
{
	Del();
	cout<<"ENTER NEW RECORD DETAILS"<<endl;
	Add();
}

void Del()  //删除现有订户的详细信息
{
	string name;
	cout<<"Enter Subscriber Name(upto 30 chars):";
	cin>>name;
	TelMap::iterator pos = telmap.find(name);
	if(pos == telmap.end() )
	{
		cout<<"No Such Subscriber"<<endl;
		return;
	}
	
	cout<<"Name: "<<pos->first<<endl;
	cout<<"Address: "<<pos->second.first<<endl;
	cout<<"Telphone: "<<pos->second.second<<endl;

	TelNameMap::iterator p = telname.find(pos->second.second);
	telname.erase(p);
	telmap.erase(pos);

	cout<<endl;


}
void DisTel()  //显示根据电话号码查出的订户详细信息
{
	int tel;
	cout<<"Enter Telephone Number:";
	cin>>tel;
	TelNameMap::iterator p = telname.find(tel);
	if(p == telname.end())
	{
		cout<<"No Such Subscriber"<<endl;
		return;
	}
	TelMap::iterator pos = telmap.find(p->second);
	cout<<"\t\t"<<"REQUESTED SUBSCRIBER DETAILS"<<endl;
	cout<<"Name: "<<pos->first<<endl;
	cout<<"Address: "<<pos->second.first<<endl;
	cout<<"Telphone: "<<pos->second.second<<endl;

	cout<<endl;

}

void DisName()  //显示根据订户名查出的订户详细信息
{
	string name;
	cout<<"Enter Subscriber Name(upto 30 chars):";
	cin>>name;
	TelMap::iterator pos = telmap.find(name);
	if(pos == telmap.end())
	{
		cout<<"No Such Subscriber"<<endl;
		return;
	}
	cout<<"\t\t"<<"REQUESTED SUBSCRIBER DETAILS"<<endl;
	cout<<"Name: "<<pos->first<<endl;
	cout<<"Address: "<<pos->second.first<<endl;
	cout<<"Telphone: "<<pos->second.second<<endl;

	cout<<endl;
}

void ViewDir()  //查看目录，显示所有订户详细信息
{
	TelMap::iterator pos = telmap.begin ();
	cout<<"\t\t"<<"The Subscriber Details List"<<endl;
	for(int i = 1; pos != telmap.end(); ++pos, ++i)
	{
		cout<<"Record"<<i<<"\t\t"<<pos->first<<"\t"<<pos->second.first<<"\t"<<pos->second.second<<endl;
	}
	cout<<endl;
}