C程序编程:给一小于五位正整数,求出位数?按逆序输出,123输出321?答:main( ){ long int x;int a,b,c,d,e,num;printf("请输入想查询的数(5位以内)");scanf("%ld",&x);if (x>9999) num=5;else if (x>999) num=4;else if (x>99) num=3;else if (x>9) num=2;else num=1;printf("x=%ld num=%d\n",x,num);a=x/10000...