how to add a int to a string in c++ code example

Example 1: change int to string cpp

#include <string> 

std::string s = std::to_string(42);

Example 2: how to convert string to int a array in javascript

var a = "1,2,3,4";

var b = a.split(',').map(function(item) {
    return parseInt(item, 10);
});