Functions Homework

Functions Homework 1. Give the function header for each of the following functions. a) Function areaRectangle takes two double arguments, length and width, and retums a double value. b) Function max takes four integers, w, x, y, z, and returns an integer c) Function output Headers does not receive any arguments and does not return a value. d) Function getValue takes an integer argument, num, and returns a char. 2. Suppose that the function foo () has the following definition: int foo (int a, int b, int c) { Which are the following statements are legal? Assume that i has type int and x has type double. a) i = foo (10, 20, 30); b) x-foo (10, 20, 30); c) i - foo (5.25, 3.45, 7.22); d) x - foo (5.25, 3.45, 7.22); e) foo (10, 20, 30); f) foo (10, 20); 3. Which of the following would be valid prototypes for a function that returns nothing and has one double parameter? b) c) d) void foo (double *); void foo (double): void foo (x); foo (double x): 4. mp3s cost $1.25 each, CDs cost $3.25 each, and DVDs cost $12.75 each. Write a function, buyMusic, that takes three parameters representing the number of mp3s, CDs, and DVDs, and returns the total dollar cost