Here is the function prototype: void AverageOfThree(int, int, int*, double*)
//input: two integer values
//input/output: one integer and one double
//Asks and gets an integer from the user and stores it in the "value at" the third parameter
//Calculate the average of the 3 integers and store the result in the value at the fourth parameter.
void AverageOfThree(int, int, int*, double*);