Thread: malloc(); and free();

What do malloc(); and free(); do?

What are they used for? Could somebody please show me an example?

Also, what header files do i include to use these functions?

I use MSVC++ 6!

Cya.

malloc is used for dynamic memory allocation, free is used to free the memory allocated by malloc (or calloc, realloc)

read the manual pages for more information

example:

Code:

#include <stdio.h>
#include <stdlib.h> /* needed for malloc, free */

int main(void)
{
   char *msg;

   msg = malloc(13); /* allocate memory (13 bytes) */
   if(msg == NULL)
      return -1;

   strcpy(msg, "Hello world!");
   printf("%s\n", msg);
   free(msg);
   return 0;
}