functions.js

function print_my_name() {
  // code to execure
  console.log("Mahade");
}

function multiply_by_two(your_number) {
  // code to execure
  console.log( your_number * 2 ); // multiply given number with two, then print in console
}

// call the functions and pass a value
multiply_by_two(3) 
// will return 6 in the console