/* SAMPLE FLOW 1 Write a program that
(1) Prompt the user and reads positive integers (fixed-point) until a negative integer in input;
(2) Call a function big() to return the largest integer.
(3) Call a function small() to return the smallest integer
(4) Print the largest and smallest integers using fprintf()
*/
/* SAMPLE FLOW 2 Write a program that
(1) Prompt the user to input an integer.
(2) Call a function evenOdd() that returns 1 if the integer is a multiple of 2.
(3) Print a message telling the user if the input number is even (multiple of 2)
or odd (not multiple of 2).
*/
/* SAMPLE FLOW 3 Write a program that calls two functions: function summ() and function mult()
(1) Function summ() returns the sum of even integers from 2 to 30
(2) Function mult() returns the product of the even integers from 2 to 30
(3) Call fprintf() to print the results of the two functions
*/