#include <string>
#include <iostream>

using namespace std;

int main() {
  string foo( "my cat's breath smells like catfood after it eats food.");
  size_t first, last;

  first = foo.find( "food");
  last = foo.rfind( "food");

  cout << "food first occurs at offset " << first << endl;
  cout << "food last occurs at offset " << last << endl;
  
  cout << "string::npos = " << hex << string::npos << dec << endl;

  first = foo.find_first_of( "food");
  last = foo.find_last_of( "food");

  cout << "first intersection at " << first << endl;
  cout << "last intersection at " << last << endl;

  return 0;
}