null pointer

dear sir ,

what is mean by null pointer in c ?

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June 13, 2011 at 5:30 PM

Literal meaning of NULL pointer is a pointer which is pointing to nothing. NULL pointer points the base address of segment.

Examples of NULL pointer:

int *ptr=(char *)0;
float *ptr=(float *)0;
char *ptr=(char *)0;
double *ptr=(double *)0;
char *ptr=?\0?;
int *ptr=NULL;

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