I took the example code the lesson gave me, took out the "const" and it still worked.

Question

So why do we even need const?

Answer 1

const makes a variable that cannot be changed while the program runs. Ex: If you want a program to only receive 5 inputs, you can make a const like NUM_INPUTS, and use it in place of 5.

If you ever want to change that amount, it's easier to reassign the const than having to find every instance of 5 and changing it.

Answer 2

Const declarations also help the compiler produce faster code.