class rectangular {
public:
int width;
int height;
int area() {
return width*height;
}
};
int main()
{
rectangular x;
x.width=5;
x.height=6;
printf("%d",x.area());
}
class rectangular {
public:
int width;
int height;
int area() {
return width*height;
}
};
class block: public rectangular {
public:
int depth;
int volume() {
return width*height*depth;
}
};
int main(int argc, char **argv)
{
block x;
x.width=5;
x.height=6;
x.depth=2;
printf("%d",x.volume());
return 0;
}
