what is the difference between these two declarations

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VB

int *f()
int (*f)()

Posted 22-Feb-12 2:41am

udayday

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Pablo Aliskevicius 22-Feb-12 8:56am

Is this a homework question? If so, you should mention that.
If not, it would be nice of you to mention how you happened to stumble upon this particular lines of code.

udayday 22-Feb-12 9:03am

its an interview question..

2 solutions

Solution 2

~~The first declares f as a variable of type pointer to int.~~
The second declares f as a variabvle of type function with no parameters returning an int

P.P.S.: I was wrong, the first is a function declaration, as CPallini pointed out. Explanations can be found at Guru Of The Week #1[^]

Posted 22-Feb-12 2:53am

Stefan_Lang

Updated 22-Feb-12 3:10am

v3

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udayday 22-Feb-12 8:56am

can u elaborate it please am little slow..

Stefan_Lang 22-Feb-12 9:08am

I was wrong, CPallini is right. Check his solution or that link:
http://www.gotw.ca/gotw/001.htm

CPallini 22-Feb-12 9:01am

The first one actually declares a function.

Stefan_Lang 22-Feb-12 9:04am

Hmm, now that you mention it....
I think I've seen that on gotw, let me check...

Stefan_Lang 22-Feb-12 9:07am

Ah, found it:
http://www.gotw.ca/gotw/001.htm
I mixed up case 2 and 3 it seems

udayday 22-Feb-12 9:34am

thanks

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CPallini · Accepted Answer · 2012-02-22T02:53:00

Solution 1

C

int *f();

f is a function returning a pointer to an integer.

C

int (*f)();

f is a pointer to a function (pointed function returns an integer value).

Posted 22-Feb-12 2:53am

CPallini