源代码和运行结果都要有

如题，程序如下：

public static void num(int a) {
        if (a >= 9) {
            num(a / 10);
        }
        int tem = a % 10;
        temp.add(tem);
    }

    static List<Integer> temp;

    public static void main(String[] args) {
        System.out.println("请输入一个正整数:");
        Scanner scan = new Scanner(System.in);
        temp = new ArrayList<>();
        int a = scan.nextInt();
        num(a);
        int result = -1;
        for (int i = 0; i < temp.size(); i++) {
            if (i == 0) {
                result = temp.get(0);
                continue;
            }
            result *= temp.get(i);
        }
        System.out.println("结果：" + result);
    }

结果如下：

#include <stdio.h>
#include <math.h>


int main()
{   
      int num,saveNum=0,i=0,result=1;
      scanf("%d",&num);
      saveNum=num;
   
      for(i=0;i<(int)log10(saveNum) + 1;i++){
          
            if(saveNum<10){
                  result=saveNum;
                  break;
            }else{
                  if(num>10){
                        printf("i=%d,num=%d\n",i,num);
                        result=(num%((num/10)*10))*result;     
                        num/=10;        
                       
                  }else{
                        result*=num;
                  }
            }
            
      }
       printf("finishresult=%d\n",result);
      return 0; 
}

看不懂的地方私信我，感兴趣可以关注一下交流学习