Q1. Give the function header for each of the following functions: 1 2 3 4 Function hypotenuse that takes two double-precision, floating-point arguments, side1 and side2, and returns a double-precision, floating-point result. Function greatest that takes three integers, x, y and z, and returns an integer Function instructions that does not receive any arguments and does not return a value. Function IntToDouble that takes an integer argument, number, and returns a double-precision, floating- point result