#include "rational.h"
// Complete these methods:
#if 0
int rational::gcd( int n1, int n2 );
void rational::normalize( );
rational operator - ( rational r );
rational operator + ( const rational& r1, const rational& r2 );
rational operator - ( const rational& r1, const rational& r2 );
rational operator * ( const rational& r1, const rational& r2 );
rational operator / ( const rational& r1, const rational& r2 );
bool operator == ( const rational& r1, const rational& r2 );
bool operator != ( const rational& r1, const rational& r2 );
std::ostream& operator << ( std::ostream& stream, const rational& r ) ;
#endif