stringstream实现字符串与int之间的转换

#include <iostream>
#include <sstream>
using namespace std;


int main()
{
    //string转int
	string str="10";
	int num;
	stringstream ss;
	ss<<str;
	ss>>num;
	cout<<num+1;

    //int转string
    int num2=100;
	string str2;
	stringstream sss;
	sss<<num2;
	sss>>str2;
	str2[0]='d';
	cout<<str2;
	
}