i need help with my my cs c++ assignment

1. So write me some function declarations for these: A) A function called EatPancakes that takes a string for an argument and returns an int.

Void EatPancakes()

{

} B) A function called DeleteThis that takes a Rock pointer and returns nothing

Void DeleteThis()

{

}

C) A function called Exchange that takes two ints and returns nothing

Void Exchange()

{ } D) A function called GetName that takes no arguments and returns a string

Void Getname()

{ }