declare a function with return value in C++

int calculateResult(int value1, int value2)
{ 
  int result = value1 + value2; 
  return result; 
}

This code defines a function named “calculateResult” which takes two integer parameters, “value1” and “value2”, and returns an integer. The function adds “value1” to “value2”, stores the result in the variable “result”, and finally returns that result to the caller. This is a very simple example of a function, but it demonstrates the basic structure of a function definition in C++: the function declaration and the code block. The function declaration includes the return type, the name of the function, and the parameters, while the code block contains the code that the function executes when it is called.