C 练习实例29
C 语言教程
· 2019-02-21 19:13:32
题目：给一个不多于5位的正整数，要求：一、求它是几位数，二、逆序打印出各位数字。
程序分析：学会分解出每一位数，如下解释。
实例
// Created by www.codercto.com on 15/11/9.
// Copyright © 2015年 码农教程. All rights reserved.
//
#include <stdio.h>
int main( )
{
long a,b,c,d,e,x;
printf("请输入 5 位数字：");
scanf("%ld",&x);
a=x/10000; /*分解出万位*/
b=x%10000/1000; /*分解出千位*/
c=x%1000/100; /*分解出百位*/
d=x%100/10; /*分解出十位*/
e=x%10; /*分解出个位*/
if (a!=0){
printf("为 5 位数,逆序为： %ld %ld %ld %ld %ld\n",e,d,c,b,a);
} else if(b!=0) {
printf("为 4 位数,逆序为： %ld %ld %ld %ld\n",e,d,c,b);
} else if(c!=0) {
printf("为 3 位数,逆序为：%ld %ld %ld\n",e,d,c);
} else if(d!=0) {
printf("为 2 位数,逆序为： %ld %ld\n",e,d);
} else if(e!=0) {
printf("为 1 位数,逆序为：%ld\n",e);
}
}
以上实例输出结果为：
请输入 5 位数字：12345 为 5 位数,逆序为： 5 4 3 2 1
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