zoukankan      html  css  js  c++  java
  • Digital Roots

    描述The digital root of a positive integer is found by summing the digits of the integer. If the resulting value is a single digit then that digit is the digital root. If the resulting value contains two or more digits, those digits are summed and the process is repeated. This is continued as long as necessary to obtain a single digit.

    For example, consider the positive integer 24. Adding the 2 and the 4 yields a value of 6. Since 6 is a single digit, 6 is the digital root of 24. Now consider the positive integer 39. Adding the 3 and the 9 yields 12. Since 12 is not a single digit, the process must be repeated. Adding the 1 and the 2 yeilds 3, a single digit and also the digital root of 39.

     
    输入
    The input file will contain a list of positive integers, one per line. The end of the input will be indicated by an integer value of zero.
    输出
    For each integer in the input, output its digital root on a separate line of the output.
    样例输入
    24
    39
    0
    样例输出
    6
    3

     1 #include <stdio.h>
     2 #include <string.h>
     3 
     4 int sum(int number);
     5 
     6 int main(){
     7     char s[1000];
     8     int i;
     9     int number;
    10     
    11     while(scanf("%s",&s)!=EOF){
    12         
    13         if(strcmp(s,"0")==0)
    14             break;
    15             
    16         number=0;
    17         for(i=0;s[i]!='';i++){
    18             number+=(s[i]-'0');
    19         }
    20         
    21         while(number>=10){
    22             number=sum(number);
    23         }
    24         
    25         printf("%d
    ",number);
    26     }
    27     return 0;
    28 }
    29 
    30 int sum(int number){
    31     int result;
    32     
    33     result=0;
    34     while(number){
    35         result+=number%10;
    36         number/=10;
    37     }
    38     
    39     return result;
    40 }
     
  • 相关阅读:
    MySQL无法登录服务器解决方法
    photoshop mac版下载及破解
    静态html传参数
    flash与php 交互(as传参给php)
    PHP发送邮件类库PHPMailer的简单使用
    PHP CodeBase: 判断用户是否手机访问
    HTTP报文
    有关phpmailer的详细介绍及使用方法
    JS 实现 Tab标签切换功能
    new Option()——实现时间联动
  • 原文地址:https://www.cnblogs.com/zqxLonely/p/4101520.html
Copyright © 2011-2022 走看看