1027 Colors in Mars

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.

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Sample Input:

15 43 71

Sample Output:

#123456

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题目大意

给三个十进制的数，转成十三进制输出

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思路

见代码

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C/C++ 

#include<bits/stdc++.h>
using namespace std;
string OP(int num){
    string key = "00";
    key[0] = num/13>9 ? 'A'+num/13-10:'0'+num/13;
    key[1] = num%13>9 ? 'A'+num%13-10:'0'+num%13;
    return key;
}
int main()
{
    int num;
    cout << "#";
    for(int z=0;z<3;z++){
        cin >> num;
        cout << OP(num);
    }
    return 0;
}

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