We can find:
1)
const char *get() { return str; }
2)
int get() const { return A; }
What is the differences of "const" in this two different parts of the function?
The first returns a pointer to a char which is constant - the value of str cannot be modified. This is used to create an unchangable thing.
The second returns an int (from A
) which doesn't modify the state of the class - hence can be called when the class is constant.