what does it mean when you have "const" after your function name and input?

Question

Possible Duplicate:
What does const mean following a function/method signature?

Go ahead laugh at me, but what does the const after the function indicate?

int someFunc() const{  //<<----notice the const
    //insert code  blah...
}

If I wanted to a return type of const int wouldn't I just write

const int someFunc(){
    //code....
}

I'd say it's a duplicate too. I didn't know what I was searching for really, it's kind of an obscure thing to look for — vvMINOvv, Nov 23 '11 at 02:27
By the way, the return types `int` and `const int` are 100% identical. The compiler ignores top level `const`s on scalar return types. — fredoverflow, Nov 23 '11 at 07:50

score 5 · Accepted Answer · answered Nov 23 '11 at 01:47

5

it means that the function can't alter any member variables.

class A {
void Func() const
{
  ++mI; // compiler error
}
int mI;
};

answered Nov 23 '11 at 01:47

axon

score 4 · Answer 2 · answered Nov 23 '11 at 01:46

4

It means that that function wont change object properties, except 'mutable'

answered Nov 23 '11 at 01:46

thank's for the info, I feel @axon 's answer would be much easier to understand for noobs like myself :D . Thank's again – vvMINOvv Nov 23 '11 at 02:12

score 0 · Answer 3 · answered Nov 23 '11 at 02:05

0

See this for much detailed definition. It's a very good one.

answered Nov 23 '11 at 02:05

Adna Kateg

3 Answers3