Exercise 05 - sumAll

Implement a function that takes 2 integers and returns the sum of every number between(and including) them:

sumAll(1, 4) // returns the sum of 1 + 2 + 3 + 4 which is 10

Hints

Think about how you would do this on pen and paper and then how you might translate that process into code:

• create a variable to hold the final sum
• loop through the given numbers (link)
• on each iteration add the number to the sum
• return the sum after finishing the loop