C++ Convert Number to String: std::to_string Guide

In C++, you can use the std::to_string() function to convert numbers to strings. For example:

#include <iostream>
#include <string>

int main() {
    int num = 123;
    std::string str = std::to_string(num);
    std::cout << "The number as a string is: " << str << std::endl;
    
    return 0;
}

In the given code, convert the integer num to a string str and then output the converted string.