1. Write a void function named computeProductSum with parameters that gets two integer values and then computes their product and their sum and returns them to the calling function: first determine the number and the types of the parameters that are needed by the function before you write it. 2. Write the sequence of statements to compute the product and the sum of 15 and 79 (by calling function computeProductSum) and then print them. 3. Write the sequence of statements to read two integer values, compute their product and the sum (by calling function computeProductSum) and to print them