67void *
calloc(
size_t size, 
size_t cnt);
 
void * calloc(size_t size, size_t cnt)
Allocate a memory block and set all its content to zeroes.
 
void * malloc(size_t size)
Allocation a block of memory.
 
void * realloc(void *ptr, size_t size)
Allocated a new block of memory and move the existing content.
 
void free(void *ptr)
This is a no-op.