1027. Colors in Mars (20)-CSDN博客

本文链接：https://blog.csdn.net/puppet_pyt/article/details/70242760

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

就是一个13进制转换题，别忘了补零就行了

#include <iostream>
#include <string>
#include <algorithm>
using namespace std;

const char Mars[13] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C'};

string trans(int n)
{
    string temp;
    while(n)
    {
        temp.push_back(Mars[n%13]);
        n /= 13;
    }
    while(temp.size()!=2)
        temp.push_back('0');
    reverse(temp.begin(), temp.end());
    return temp;
}

int main()
{
    int R, G, B;
    cin >> R >> G >> B;
    cout << "#" << trans(R) << trans(G) << trans(B) << endl;
    return 0;
}