to make the programs more efficient, do i need to free variables which are declared locally in the functions? Are they not disposed when the function ends?
serkan sendur 821 Postaholic Banned Featured Poster
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Jump to PostYou only need to explicitly free resources that you explicitly ask for. For example, a FILE* given to you by fopen needs to be closed, and a pointer given to you by malloc needs to be freed.
Jump to Post>So when i declare a local variable inside a function,
>it will be disposed from the memory automatically?
Yes.>And i should dispose it myself if i create it using malloc?
Yes.
All 5 Replies
Narue 5,707 Bad Cop Team Colleague
You only need to explicitly free resources that you explicitly ask for. For example, a FILE* given to you by fopen needs to be closed, and a pointer given to you by malloc needs to be freed.
Salem 5,265 Posting Sage
If you call malloc, then you need to call free.
The compiler looks after allocation and deallocation of local variables.
ddanbe 2,724 Professional Procrastinator Featured Poster
You do not need to free local variables when the function ends. Where would they be anyway? Who or what could still access them?
serkan sendur 821 Postaholic Banned Featured Poster
So when i declare a local variable inside a function, it will be disposed from the memory automatically? And i should dispose it myself if i create it using malloc?
Narue 5,707 Bad Cop Team Colleague
>So when i declare a local variable inside a function,
>it will be disposed from the memory automatically?
Yes.
>And i should dispose it myself if i create it using malloc?
Yes.
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