Create a simple calculator program in C++ using return, references, and overload. The program should call a function to display a menu of three options:
1 â Integer Math
2 â Double Math
3 â Exit Program

The program must create 4 functions called add, subtract, multiply and divide. These functions must take two doubles as pass by value parameters and one double as a pass by reference variables. The function does the calculation and sets the reference variable to the calculated value; this is how the value is returned to the calling function. Each function performs the appropriate mathematical task.