#include <iostream>

using namespace std;

void sommaprodiff(int, int, int*, int*, int*);

int main(){
  
  int sum,prod,diff;
  int a = 4;
  int b = 5;
  
  sommaprodiff(a, b, &sum, &prod , &diff) ;
  
  cout << "Somma      -->> " << sum << endl;
  cout << "Differenza -->> " << diff << endl;
  cout << "Prodotto   -->> " << prod << endl;

}

void sommaprodiff(int a, int b, int* sum , int* prod , int* diff){
  
  *sum = a + b;
  *prod = a*b;
  *diff = a-b;
  
}