#include <iostream>
using namespace std;

int main() {

  int a=5, b=6;
  cout << "a=" << a << " b=" << b << " a+b=" << a+b << endl;

  a=5; b=6;
  cout << "a=" << a << " b=" << b << " +a+b=" << +a+b << endl;

  a=5; b=6;
  cout << "a=" << a << " b=" << b << " -a+b=" << -a+b << endl;

  a=-5; b=6;
  cout << "a=" << a << " b=" << b << "  a+b=" <<  a+b << endl;

  a=-5; b=6;
  cout << "a=" << a << " b=" << b << " +a + b=" << +a + b << endl;

  a=-5; b=6;
  cout << "a=" << a << " b=" << b << " -a + b=" << -a + b << endl;

  a=5; b=6;
  cout << "a=" << a << " b=" << b << " +a + +b="  << +a + +b << endl;

  a=5; b=6;
  cout << "a=" << a << " b=" << b << " +a++ + b=" << +a++ + b << endl;

  a=5; b=6;
  cout << "a=" << a << " b=" << b << " +a + ++b=" << +a + ++b << endl;

  a=5; b=6;
  cout << "a=" << a << " b=" << b << " +a + b++=" << +a + b++ << endl;

}