Entry tags:
Another C++ surprise
Did you know that the following code will compile?
No, the surprise isn't the slightly incorrect definition of main(). The surprise is that the Foo class is declared as containing a FrobSomething() method, but there's no implementation of the method. C++ is perfectly happy with this as long as you never actually try to call FrobSomething().
#include <stdio.h>
class Foo {
public:
Foo();
~Foo();
void FrobSomething(void* something);
};
Foo::Foo() {
printf("New foo!\n");
}
Foo::~Foo() {
printf("Destroyed foo!\n");
}
void main() {
Foo foo;
}
No, the surprise isn't the slightly incorrect definition of main(). The surprise is that the Foo class is declared as containing a FrobSomething() method, but there's no implementation of the method. C++ is perfectly happy with this as long as you never actually try to call FrobSomething().