#includeint main(){int n,a,b,c;printf("输入一个三位数：\n");while(1){scanf("%d",&n);if(n<100||n>999)printf("输入有误，重新输入：\n");else break;}a=n/100;b=n/10%10;c=n%10;printf("百：%d 十：%d 个：%d\n",a,b,c);}
