PAT (Advanced Level) Practice 1027 Colors in Mars (20 分)

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 Specification:

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

Output Specification:

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 its left.

Sample Input:

15 43 71

Sample Output:

#123456

思路：进制转换

#include <iostream>
#include <string.h>
#include <cstring>
#include <algorithm>
#include <cstdio>
using namespace std;
char _deal(int x)
{
    if(x>=0&&x<10) return x+'0';
    else if(x>=10) return x+'A'-10;
}
int main()
{
    int a,b,c;
    while(cin>>a>>b>>c){
        char s[6];
        s[0]='#';
        int tmp=a/13;
        s[1]=_deal(tmp);
        tmp=a%13;
        s[2]=_deal(tmp);
        tmp=b/13;
        s[3]=_deal(tmp);
        tmp=b%13;
        s[4]=_deal(tmp);
        tmp=c/13;
        s[5]=_deal(tmp);
        tmp=c%13;
        s[6]=_deal(tmp);
        printf("%s\n",s);
    }
    return 0;
}