Comments on: c basics https://www.emblogic.com/blog/10/c-basics/ Embedded System and ARM Training Mon, 07 Oct 2013 04:00:03 +0000 hourly 1 http://wordpress.org/?v=3.9.1 By: Swarup mishra https://www.emblogic.com/blog/10/c-basics/#comment-352 Thu, 20 Oct 2011 11:55:05 +0000 http://emblogic.org/blog/?p=1148#comment-352 NULL is a macro defined in the header file for NULL POINTER
while NUL is the name of first character in ASCII table that corresponds to the 0 decimal value.

]]> By: Mandeesh Singh https://www.emblogic.com/blog/10/c-basics/#comment-351 Thu, 20 Oct 2011 06:15:52 +0000 http://emblogic.org/blog/?p=1148#comment-351 NUL : A Character in the ASCII set with an ASCII value of 0. Used as a Control character or a String Terminator to indicate the End of Strings.

NULL : It is an Address. It is used to Initialize pointers to indicate that the Pointer does not point to a Valid Object.
Try this :
int main()
{
printf(“%d %d”,sizeof(“”),sizeof(NULL));
}

More information can be found here :
http://en.wikipedia.org/wiki/Null_character
http://en.wikipedia.org/wiki/Null_pointer#Null_pointer

]]>