The goal today is to write a function that returns the sum of all prime numbers up to a limit. We will do this in two steps: first we're going to write an isPrime function that checks wether or not a number is prime, and then the actual sumPrimes function.

Check if a number is prime

Write an isPrime function that takes an i32 number as parameter and returns true if this number is prime, false if it isn't.

Reminder: A prime number:

Can only be divided by 1 and itself

Is greater than 1

Sum all primes

Write a sumPrimes function to sum all prime numbers up to the parameter limitincluded. Copy you isPrime function from the last assignment to make use of it

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