#include <sstream>
#include <string>
#include <iostream>
using namespace std;
int main() {
string str = "1";
istringstream iss(str);
int one = 0;
iss>> one;
cout<< "one is: " << one <<endl;
str = "2";
istringstream anotheriss(str);
anotheriss>> one;
cout<< "one is: " << one <<endl;
return 0;
}