the program should declare a 20-element, one dimensional int array named commision. assign the following numbers to the array: 300, 500, 200, 150, 600, 750, 900, 150, 100, 200, 250, 650, 300, 750, 800, 350, 250, 150, 100, and 300. the program should prompt the user to enter a commission amount from 0 to 1000. it then should display the number of salespeople This is written in C++