[<<Previous Entry]
[^^Up^^]
[Next Entry>>]
[Menu]
[About The Guide]
malloc() Allocate Memory Block
#include <malloc.h> Required for declarations only
char *malloc(size);
unsigned size; Number of bytes to allocate
malloc() allocates a block of 'size' bytes.
Returns: Pointer to allocated space. Returns NULL (defined in
<stdio.h>) if the space cannot be allocated.
Notes: Use free() to deallocate block allocated with malloc().
The block allocated by malloc may be larger than 'size'
bytes, due to space required for alignment and DOS
housekeeping. The space is guaranteed to be suitably
aligned for storage of any type of object. (Use a cast on
the return value if a pointer to a type other than char
is required.)
-------------------------------- Example ---------------------------------
The following statements allocate space for 1000 bytes and then free
the allocated space.
#include <malloc.h> /
#include <stdio.h> /* for printf and NULL */
char *memptr;
main()
{
if ((memptr = malloc(1000)) == NULL)
printf("not enough room to allocate memory\n");
else {
.
.
free(memptr);
}
}
See Also:
calloc()
realloc()
free()
This page created by ng2html v1.05, the Norton guide to HTML conversion utility.
Written by Dave Pearson