代码如下
#include<stdio.h>
#include<stdlib.h>

int main(void)
{
  unsigned long *primes=NULL;
  unsigned long trial=0;
  size_t total=0;
  size_t count=0;
  size_t i=0;
  int found=0;

  printf("Howmany primes would you like -you'll get at least 4?");
  scanf("%u",&total);
  total=total<4U?4U:total;

  primes=(unsigned long *)malloc(total*sizeof(unsigned long));
  if(primes==NULL)
  {
    printf("\nNot enough memory.Hasta la Vista,baby.\n");
    return 1;
  }
  *primes=2UL;
  *(primes+1)=3UL;
  *(primes+2)=5UL;
  count=3U;
  trial=5U;

  while(count<total)
  {
    trial+=2UL;
    for(;i<count;i++)
     if(!(found=(trial%*(primes+i))))
      break;
    if(found)
      *(primes+count++)=trial;
  }
  for(;i<total;i++)
  {
    if(!(i%5U))
    printf("\n");
    printf("%12lu",*(primes+i));
  }
  printf("\n");
  getch();
}

我用WIN-TC没错误，你的编译器不一样吧