// The compilable parts of the previous program.

#include <iostream>
#include <string>

int main(){
  // Static casting int to double:
  int k{3};
  double f{static_cast<double>(k)};
  std::cout << f <<std::endl;              // 3

  // Static casting double to int:
  double d{123.456};
  int j{static_cast<int>(d)};              // j initialized to 123
  std::cout << j <<std::endl;              // 123
}