#include <iostream>
#include <string>
#include <typeinfo>

using namespace std;

template< class T> void foo( T op1, T op2)
{
  string foo;
  if (typeid( T) == typeid( foo)) {
    cout << "foo was called with a string" << endl;
  }
  cout << "op1 = " << op1 << endl;
  cout << "op2 = " << op2 << endl;
}

template<>
void foo<int>( int op1, int op2) {
  cout << "op1 = " << op1 << endl;
  cout << "op2 = " << op2 << endl;
  int product  = op1 * op2;
  cout << "op1 * op2 = " << product << endl;
}

int main() {
  int i=1, j=17;
  string lhs("lhs"), rhs("rhs");

  foo<int>( i, j);

  foo<string>( lhs, rhs);

  foo<double>( 1.0, 3.14);

  return 0;
}