Create a new project in Visual Studio that uses a sentinel controlled loop. The program should ask for a new Integer number until the user types -999. Each number should be added into a sum variable. Recall that -999 is called a sentinel value and when using this kind of loop you will want to prompt the user for the first number before the loop begins. The statements inside the loop body should add the number provided by the user to the sum, but do not display the number for the user. The output of the sum should only occur one time at the end of the program.