unsigned long to string in c++ code example

Example 1: to_string c++

// to_string example
#include <iostream>   // std::cout
#include <string>     // std::string, std::to_string

int main ()
{
  std::string pi = "pi is " + std::to_string(3.1415926);
  std::string perfect = std::to_string(1+2+4+7+14) + " is a perfect number";
  std::cout << pi << '\n';
  std::cout << perfect << '\n';
  return 0;
}

Example 2: int to string C++

#include <string> // important

int main() {
  int number = 1250;
  
  std::string numberAsString = std::to_string(number);
  
  // result "1250"
  
  return 0;
}