c++ int string互转

1.

    if(i<9){

            monthNumber = "0";

            itoa(i+1,iCharArray,10);

            monthNumber += iCharArray;

        } else {

            itoa(i+1,iCharArray,10);

            monthNumber = iCharArray;

        }    

2.

int转string
int n = 0;
std::stringstream ss;
std::string str;
ss<<n;
ss>>str;
string转int
std::string str = "123";
int n = atoi(str.c_str());

#include "stdafx.h"



#include <string>

#include <sstream>



using namespace std;

void main()

{

    // int 转 string

    stringstream ss;

    int n = 123;

    string str;

    ss<<n;

    ss>>str;

    // string 转 int

    str = "456";

    n = atoi(str.c_str());

}