#include <iostream>
using namespace std;

int subtraction(int a, int b){
  int r;
  cout << "a is " << a << endl;
  cout << "b is " << b << endl;
  r=a-b;
  return (r);
}

int main (){
  int z;
  cout << endl;
  z = subtraction(2,-1.5);
  cout << "The result is " << z << endl;
  cout << endl;
  return 0;
}