帮忙解答一道随机函数题

#include <stdlib.h>
#include <math.h>
#include <time.h>



int main()
{
   
    int num1, num;
    num = 5;
   
   
    srand((unsigned int)time(NULL));
    num1 = (int)(((double)rand()/RAND_MAX)*pow(10, num));  
   
    while (num1 != 0)
    {
        if (num1 == num)
        {
            printf("num1=%d,恭喜你猜对了！\n",num1);
            break;
        }
        srand((unsigned int)time(NULL));
        num1 = (int)(((double)rand()/RAND_MAX)*pow(10, num));
    }
    if (num1 = 0)
        printf("你没猜对！");
    return 0;
}

你等待结果可能要很久的时间

我试了，能运行……