释放先前分配的DOS内存块 freemem

[c]代码库

#include <dos.h>
#include <alloc.h>
#include <stdio.h>

int main ( void )
{
	unsigned int size, segp;
	int stat;

	size = 64; /* (64 x 16) = 1024 bytes */
	stat = allocmem ( size, &segp );
	if ( stat < 0 )
		printf ( "Allocated memory at segment:\
      %x\n", segp );
	else
		printf ( "Failed: maximum number of\
      paragraphs available is %u\n",
		         stat );
	freemem ( segp );

	return 0;
}