Summation in the loop

In a loop, you can log array elements in the console, as well as perform some operations with them. For example, summarize. You already did this in the “Loops” chapter.

To do this, you must enter a variable with a zero value before the loop. Then at each iteration add to it the value of the next element of the array. As a result, after the loop, the variable will be the sum of all the elements.

Our task is to find the average value. And for this, you first need to calculate the sum of all the elements.

Let’s rewrite the loop so that it doesn’t log the values ​​of the elements in the console, but consistently stacks them together and writes them into one variable.