Write a complete cpp program that has two functions -

(a) sum that takes three int parameters, the first two being value and the third being reference.

The function sum will add up the values of the first two parameters and return their sum in the third parameter.

(b) sum2 that takes three int parameters, the first two being value and the third being a pointer to an integer. The function sum2 will add up the values of the first two parameters and return their sum in the third parameter.

write the prototype above main

Invoke the two functions in main

Write the function bodies after main.

(The two functions are of type void).

c++