#include<iostream>

// declare function prototypes above the main
int maximum (int, int, int);
void print_message(void);


int main(){

   // a, b, and c will be arguments to the function call.
   int a, b, c;

   cout << endl << "Enter three integers: "<< endl;
   cin >> a >> b >> c;

   // declare an integer to hold the value returned from a function
   int max_number;

   // calling the maximum function
   max_number = maximum(a, b, c);
   cout << "Max number is: " << max_number << endl; 


   // This is another way to call that function:
   // cout << "Maximum number is: " <<  maximum(a, b, c) << endl;

   // calling void function
   print_message();
  
   return 0;
}


// function definitions are placed outside the main function
int maximum(int x, int y, int z) {

   int max = x;
  
   if (y > max) {
     max = y;
   }

   if (z > max) {
     max = z;
   }

   return max;
}



void print_message(){
   cout << endl << "Void function was called" << endl << endl;
}