Реферат: Объектно ориентированое програмирование на С

return a*b;

};

double rectangle::perimeter()

{

return 2*a+2*b;

};

double rectangle::diagonal()

{

return sqrt(a*a+b*b);

};

int rectangle::is_square()

{

if(a==b) return 1;

return 0;

};

void rectangle::print_rectangle()

{

char msg1[]=" ", msg2[]=" not ";

cout<<"a="<<a<<" b="<<b;

cout<<"\nS= "<<square()<<" m^2 P="<<perimeter()<<" m d="<<diagonal()<<" m";

cout<<"\nRectangle is";

if(is_square())

cout<<msg1;

else

cout<<msg2;

cout<<"square.\n";

return;

};

#endif