Question 5 a) Write a function prototype and a function definition that takes three arguments, all of type integer, and that returns the product of its arguments. Write a C program that uses the function vou have created. [7 marks] b) Explain the following terms as used in computer programming ii Linking iii. Variable declaration [6 marks] c) Given the following code fragment, what is the output? Explain your answer 13 marks] intx-5; if (x> 5) cout