implicit C++ constructor conversions

PityFoo.cpp

#include <stdio.h>

class Foo {

public:
  Foo(int blar) {
    _member = blar;
  }

  operator int() const {
    return _member;
  }
  
private:
  int _member;
};


void PityTheFoo(Foo fooToBePitied) {
  printf("I pity the foo of %d\n", (int)fooToBePitied);
}

int main(int argc, char* argv[]) {
  Foo foo = 7;

  printf("foo = %d\n", (int)foo);

  PityTheFoo(11);

  return 0;
}