【PAT】1027. Colors in Mars (20)

题目：http://pat.zju.edu.cn/contests/pat-a-practise/1027

简单题，考察十进制数和n进制数的转换和输出格式的控制。

People in Mars represent the colors in their computers in a similar way as the Earth people. That is, a color is represented by a 6-digit number, where the first 2 digits are for Red, the middle 2 digits for Green, and the last 2 digits for Blue. The only difference is that they use radix 13 (0-9 and A-C) instead of 16. Now given a color in three decimal numbers (each between 0 and 168), you are supposed to output their Mars RGB values.

Input

Each input file contains one test case which occupies a line containing the three decimal color values.

Output

For each test case you should output the Mars RGB value in the following format: first output "#", then followed by a 6-digit number where all the English characters must be upper-cased. If a single color is only 1-digit long, you must print a "0" to the left.

Sample Input

15 43 71

Sample Output

#123456

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#include<iostream>#include<string.h>using namespace std;char red[2];char green[2];char blue[2];void change(int a,char color[2],int base){int i=0;do {if( (a%base)<10 )color[i++] = ((a%base) + '0');elsecolor[i++] = (a%base) + 'A' - 10;a /= base;} while (a != 0);}int main(){memset(red,'0',sizeof(red));memset(green,'0',sizeof(green));memset(blue,'0',sizeof(blue));int base = 13;    int a,b,c;int n;cin>>a>>b>>c;change(a,red,base);change(b,green,base);change(c,blue,base);cout<<"#";    cout<<red[1]<<red[0];cout<<green[1]<<green[0];cout<<blue[1]<<blue[0]<<endl;return 0;}