stdlib.h File Reference

#include <stddef.h>

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Macros
#define	EXIT_SUCCESS   0
	Success exit code.
#define	EXIT_FAILURE   1
	Failure exit code.

Functions
void *	malloc (size_t size)
void *	realloc (void *mem, size_t new_sz)
void	free (void *mem)
void	exit (int code)

Function Documentation

exit()

void exit

(

int

code

)

Exit the process

Parameters

code	The exit code of the process

free()

void free

(

void *

mem

)

Frees a block of memory on the heap

Parameters

mem	The block of memory to free

malloc()

void* malloc

(

size_t

size

)

Allocates a block of memory on the heap

Parameters

size	The size of the block to allocate

Returns

The address of the allocated block, or NUL if the allocation failed

realloc()

void* realloc	(	void *	mem,
		size_t	new_sz
	)

Changes a block of memory on the heap to a new size, or if mem is NULL, act like malloc

Parameters

mem	The block of memory to change size
new_sz	The size of the block to allocate

Returns

The new address of the allocated block, or NUL if the allocation failed