Callbacks exercise

callbacks-exercise.md

Callback function exercise

We are creating a calculator that can do three types of calculation:

• doubling a number with the double function
• halving a number with the halve function
• squaring a number with the square function

Complete the functions so that calculate takes one of the functions that implement an operation and a number as arguments, and returns the result of the calculation.

function double(x) {
  // write solution here
}

function halve(x) {
  // write solution here
}

function square(x) {
  // write solution here
}

function calculate(/* write parameters here */) {
  // write solution here
}

// Examples
console.log(calculate(double, 4)); // 8
console.log(calculate(halve, 4)); // 2
console.log(calculate(square, 4)); // 16