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What value does this add?
I’d just add to the answers the “why?
Include your email address to get a message when this question is answered. The pointer has been assigned a valid value.
This keeps your code clean and easy to understand, since you’ll know you’re working with pointers every time you see NULL. Cookies make wikiHow better. Calling it a caused some confusion for me when I started reading about operator overloading in that other answer, which is not relevant in C.
C library function – memcpy()
We’ll use ptr in this article as the name of the pointer progdamlama checking. I think that it is used to call members and functions like the equivalent of the. The question was specifically about C, which does not have classes or reference variables. Belton The hard way series are bad, the guy says stuff that wasn’t even relevant when he wrote the book and he doesn’t care about good practices.
C Pointer to Pointer
The whole mess of typedef-ing functions with all the extra parentheses would programlam been avoided as well. To create this article, 14 people, some anonymous, worked to edit and improve it over time. You will end up with code like this:.
Test whether the variable is true. I think the code would be more readable if it’s not in all caps like it’s typed by teenagers on AOL chat from the 90s.
This article has also been viewed 27, times. Jayghosh Wankar 1 7. I found this solution on page of Stephen Kochan’s Programming in C. Nowadays it can get a bit more complicated, and varies by operating system. Jack programlamz 26