Write a C$+$ program to generate a short menu that asks the user to select a$.$ Add, b$.$ Multiply,

or q$.$ Quit. If add or multiply is selected, then input two integers and output their sum or

product. The menu should then repeat. If quit is selected, the program should exit.

Here is a sample execution, with user input in blue bold:

Select from the menu.

a$.$ Add

b$.$ Multiply

q$.$ Quit

a

Enter two integers to add, separated by whitespace.

$23$

The sum is $5$

Select from the menu.

a$.$ Add

b$.$ Multiply

q$.$ Quit

b

Enter two integers to multiply, separated by whitespace.

$-10$

$20$

The product is $-200$

Select from the menu.

a$.$ Add

b$.$ Multiply

q$.$ Quit

a

Enter two integers to add, separated by whitespace.

$100200$

The sum is $300$

Select from the menu.

a$.$ Add

b$.$ Multiply

q$.$ Quit

q