What does this expression mean float pay(float hoursWorked) const;
In C, if we return a const one, const float f ()... what does this mean by putting const in the last
Asked
Active
Viewed 183 times
0
-
It's not an expression, it's a member function declaration. – chris Mar 10 '14 at 02:48
-
yes, it is declaration, but what does that mean by putting const there – user3341953 Mar 10 '14 at 02:50
-
The question along with your comment on the answer suggests that it's time you invest in a good book – molbdnilo Mar 10 '14 at 10:28
1 Answers
1
It is a declaration of non-static member function of some class
float pay(float hoursWorked) const;
The last qualifier const means that the object for which this function is called is considered as a constant object and this function may no change its data members except those that were declared with specifier mutable.
Vlad from Moscow
- 301,070
- 26
- 186
- 335
-
thanks, I also search static function member. what does static mean. It seems that static function could not change the private member? – user3341953 Mar 10 '14 at 03:07
-
@user3341953 No it is a wrong statement. static member functions as non-static member functions can change private data members of a class where they are defined. Static member functions are called without an instantiation of an object. They are "class-wide" functions while non-static member functions are "object-wide" functions. – Vlad from Moscow Mar 10 '14 at 03:11