函数名: allocmem 
 功  能: 分配DOS存储段 
 用  法: #include <dos.h> 
         int allocmem(unsigned size, unsigned *seg); 
 程序例: 
 #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 == -1) 
      printf("Allocated memory at segment: %x\n", segp); 
   else 
      printf("Failed: maximum number of paragraphs available is %u\n", 
             stat); 
  return 0; 
 }