一個簡單的僱員類應用
#include "stdafx.h"
#include<iostream>
#include<string>
#include<stdlib.h>
using namespace std;
class employee
{
public :
employee():name("noname")
{
setid();
}
employee(string name1):name(name1)
{
setid();
}
employee(const employee& other):name(other.name)
{
setid();
}
//賦值操作符
employee& operator=(const employee& other)
{
name=other.name;
return *this;
}
//設定僱員id
void setid()
{
id+="emp-";
if(counter<10)
id+="000";
else if(counter<100)
id+="00";
else if(counter<1000)
id+="0";
else
{
std::cerr<<"no valid employee id"<<std::endl;
}
char buffer[5];
_itoa(counter,buffer,10);//使用庫函式將整數轉換為字串
id+=buffer;
++counter;
}
void output()
{
cout<<this->name<<endl<<this->id<<endl;
}
private:
string id;
string name;
static int counter;
};
int employee::counter=1;
int _tmain(int argc, _TCHAR* argv[])
{
employee bb=employee("huhu");
bb.output();
return 0;
}
該簡單的程式實現了僱員的構造,每個僱員有唯一的id。
程式實現後的結果如下: