使用c语言生成随机数的示例分享

int main(void)
{
 int i, j, flag, num, a[MAX] = { 0 }, max, ch;
 srand((unsigned)time(NULL));

 printf(“Please input max number(q to quit): “);

  a:while ((scanf(“%d”, &max)) == 1)
 {
  if (max >= 40)
  {
   printf(“Please input max number(q to quit): “);
   while (getchar() != ‘\n’)
    continue;
   continue;
  来源gaodai#ma#com搞*代#码网}

  for (i = 0; i <max; ++i)
  {
   do{num = rand() % 41 + 1;
   }while(num==8||num==36);
   flag = 1;
   for (j = 0; j <i; ++j)
   {
    if (num == a[j] || num == 8 || num == 36)
    {
     flag = 0;
     break;
    }
   }
   if (flag)
    a[i] = num;
   else
    –i;
  }
  while
   (getchar() != ‘\n’) continue;
  for (i = 0; i <max; ++i)
   printf(“%d “, a[i]);
  printf(“\n”);
  printf(“Please input max number(q to quit): “);
 }
 if (getchar() != ‘q’)
 {
  puts(“q to quit,please!”);
  printf(“Please input max number(q to quit): “);
  while (getchar() != ‘\n’)
   continue;
  goto a;
 }
 printf(“Bye!”);
 return 0;
}