Yes thats right but a small but obvious correction which holds good till you
explicitly call free function or...
On Mon, Jul 18, 2011 at 10:49 PM, Swathi <chukka.swa...@gmail.com> wrote:
> In first 1, you are using malloc() so the memory will be allocated from
> heap which holds good till end of your program.. In second case, the memory
> will be allocated on the stack.. so once the function is exited, your stack
> data will be released...
>
>
> On Mon, Jul 18, 2011 at 9:49 PM, rj7 <r4ra...@gmail.com> wrote:
>
>> Can someone pls explain the difference between these two especially in
>> terms of scope... one example i have come across is
>> 1.
>> char *xxx(int n)
>> {
>> char *retbuf = malloc(25);
>> if(retbuf == NULL)
>> return NULL;
>> sprintf(retbuf, "%d", n);
>> return retbuf;
>> }
>>
>> 2.
>> char *xxx(int n)
>> {
>> char retbuf[25];
>> sprintf(retbuf, "%d", n);
>> return retbuf;
>> }
>>
>> First one is correct and the second one is wrong... why does the scope
>> of retbuf extends to the calling function...
>> am just a beginner so ignore the stupidity(if any).....
>>
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--
Sunny Aggrawal
B-Tech IV year,CSI
Indian Institute Of Technology,Roorkee
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