1. Write a program using C that prints the sentence "Programming is interesting and fun!", using the following methods. a. Using one printf statement with the sentence in one line. b. Using one printf statement with each word on a new line. c. Using a printf statement for each word with the sentence in one line. d. Using a printf statement for each word with each word on a new line. 2. Write a program that asks the user to enter a number, obtains it from the user and prints the number to the screen. 3. Write a program that asks the user to enter two numbers, obtains them from the user and prints the sum of the numbers. 4. Extend the program in 3 so that it asks the user to enter two numbers, obtains them from the user and then prints their sum, product, difference, quotient and remainder