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CSCI 40 Computer Programming in C Assignment 11 Write a function that receives a positive integer, say a, then it returns the sum of the squares of all the positive integers that are less than or equal to a. For example, if the number that the function receives is 5, then it will return 55 1. 2. Write a function that receives 5 integers and then returns the smallest integer among those integers the function receives Write a function that receives any two positive integers, then returns the sum of the integers between those two numbers with those two numbers included. For example, if the function receive 4 and 9, then the return value of the function should be 39 3. Write a function that receives a positive integer and then displays a right triangle of asterisks with the base of the triangle equal to the number that the function receives. 4. (Optional for extra credit) Write a function that receive two integers and then returns the greatest common factor of the numbers the function receives. 5