点击链接PAT甲级-AC全解汇总

题目：
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 forBlue. 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
1

Sample Output:

#123456
1

题意：
输入三个小于169的数 转成13进制拼起来输出

我的代码：

#include
using namespace std;

string fun(int num)
{
    string res;
    int a=num/13;
    int b=num%13;
    if(a>9)res+=(a-10+'A');
    else res+=(a+'0');
    if(b>9)res+=(b-10+'A');
    else res+=(b+'0');
    return res;
}

int main()
{
    int a,b,c;
    cin>>a>>b>>c;
    string res="#";
    res=res+fun(a)+fun(b)+fun(c);
    cout<<res<<endl;
    return 0;
}

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