mm.c

这是一个简单的C编译器的词法分析和语法分析。

#include "define.h"






void *allocate(unsigned long n, unsigned long a)
{
   void *ptr;
   if ((ptr = (void *) malloc(n)) == NULL)  
   {  
      error("Not enough memory to allocate \n");  
      exit(1);  /* terminate program if out of memory */  
   }  
   return ptr;
}