difference b/w const int func(); and int func() const;

Question

I know when we use

int func() const;

then we cannot modify anything in the function except for mutable variable. But when i used

const int func();

It is allowing me to modify any thing?

Answer 1

const int func();

is function that returns const int and

int func() const;

is const function, ie function that doesn't modify the state of object, upon which it has been called.