#include "stdafx.h"
#include <iostream>
#include <string>
#include <sstream>
using namespace std;
int main(void)
{
//method1
char buf[4];
itoa(123,buf,10); //自动添'\0'
cout<<buf<<endl;
char buf1[]="567";
int var=atoi(buf1);
cout<<var<<endl;
//method2
int var1=345;
stringstream ss;
ss<<var1;
string str;
ss>>str;
cout<<str.c_str()<<endl;
ss.clear(); //这里注意清空
str="678";
ss<<str;
ss>>var1;
cout<<var1<<endl;
//单向转
int var2=200;
char buf2[4];
sprintf(buf2,"%d",var2);
cout<<buf2<<endl;
system("pause");
return 0;
}