C++ : Please write the code in one function not multiple functions.

Learning Objectives: Use of for loops to solve counter-controlled problems Use of do/while loops for validation and/or menu loops Use of switch statements for multi-way decisions - General Description: Write a program that allows the user to choose one of three "games" to play. It should repeat the following until the user selects X to exit - Display a menu with the options S - Sum Between BPrint Box X - Exit Enter option: - You may assume the user will enter only one char for the option when the user enters an invalid option, print Invalid option! Try again!" When the user enters X, print "Thanks for playing", do a system pause, and end the program When the user enters S Ask the user to enter a number to start counting, and a number to stop counting. You may assume the second number will be greater than or equal to the first, and both will be integers o o Calculate the sum of all numbers between and including the start and stop values entered Print the sum o When the user enters B: Ask the user to enter the size of a box. You may assume the number is an integer between 1 and 15 o o Print a square of stars on the screen using the number entered as the dimension Example: user enters 5, print 5 stars on 5 lines, with a space between each star on a line