Write two void functions named greeting and terminating. Greeting function outputs "Hello, welcome to ET575!" to the console and terminating function outputs "EXIT PROGRAM. GOOD BYE!" to the console. Write a program to test the function.

Write a function myfunction that requests user input i the form of an integer value, 1, 2 or 3. The function should print out: 1. Option 1 selected 2. Option 2 selected 3. Option 3 selected when the corresponding number is entered, and the loop should end if q is entered. Any unrecognised options should result in the following statement being printed: • Unknown option

Write three void functions: Input three numbers, sort the three numbers, display the three numbers. Write a main program to test the functions.    void input (int  &a,  int &b, int &c);    void sort3 (int  &a,  int &b, int &c);    void display (int  a,  int b,  int c);

QUESTION 1 Write a complete program that consists of the main function that will call 4 user-defined functions. The task of each function is described below. 1. The first function is to display your information such as: a. Full Name b. Matrix No С. Group 2. The second function is to display a Plagiarism Declaration statement "I confirm that this LAB TEST is my own work and is not copied fror 3. The third and the fourth functions are based on the following problem Sound travels through the air because of collisions between the molecules in the air. The temperature of the air affects the speed of the molecules, which in turn affects the speed of sound. The velocity of sound in dry air can be approximated by the formula: Velocity 331.3 + 0.61 x Tc Write a function that allows the user to input a starting and an ending temperature. Within this temperature range, another function pass by value should output the temperature and the corresponding velocity in 1° increments using a do-while…