program that figures out if any number from itself to 1 is prime c code example

Example: Q5.WAP tofind out the sum of all prime numbers between 1 and n by using a user defined function (say isPRIME) to be used for prime number testing, where n is a value supplied by the user.

Q5.WAP tofind out the sum of all prime numbers between 1 and n by using a user defined function (say isPRIME) to be used for prime number testing, where n is a value supplied by the user.