Convert int or float to string in C++

num_to_string.cpp

#include <iostream>
#include <string>

int main()
{
    int i = 9876;
    float f = 3.14;

    std::string si = std::to_string(i);
    std::string sf = std::to_string(f);

    std::cout << si << " " << sf << std::endl;

    return 0;
}