C++ Use a void function

23) Convert last week's value returning functions, into void functions! Make the necessary hanges to the function header, body and prototype a) Write a program that has a function named timesTen. The function should accept a double argument, and then multiply it by 10 and display the result to the screen. b) Write a program that has a function called findAverage that takes as arguments 4 integers and calculates and displays the average of those numbers. Call the function in main, ask the user for the 4 integers and then pass them to the function c) The distance a vehicle travels can be calculated as follows Distance-Speed *Time Write a function named calDistance that accepts a vehicle's speed and time as arguments, and calculates and displays the distance the vehicle has traveled