calloc

calloc

Defined in header <stdlib.h>
void* calloc( size_t num, size_t size );

Allocates memory for an array of num objects of size size and initializes all bytes in the allocated storage to zero.

If allocation succeeds, returns a pointer to the lowest (first) byte in the allocated memory block that is suitably aligned for any object type.

If size is zero, the behavior is implementation defined (null pointer may be returned, or some non-null pointer may be returned that may not be used to access storage).

calloc is thread-saf