const computeAge = function () {
  let age = 10;
  console.log('another age: ', age);
}


const anotherComputeAge = computeAge;

anotherComputeAge();

function callComputeAge(fn) {
  fn();
}

const adder = function(first, second) {
  console.log(first + second);
};

adder(1, 2);