PAT-A 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

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

程序代码：

#include<stdio.h>
char r[3]={0};
char g[3]={0};
char b[3]={0};
void convert(char* s,int n);
int main()
{
    int red,green,blue;
    scanf("%d%d%d",&red,&green,&blue);
    convert(r,red);
    convert(g,green);
    convert(b,blue);
    printf("#%s%s%s",r,g,b);
    return 0;
}
void convert(char* s,int n)
{
    if(n<13)
    {
        s[0] = '0';
        if(n<10)
            s[1]=n+'0';
        else
            s[1]=n-10+'A';
    }
    else
    {
        if((n%13)<10)
            s[1]=n%13+'0';
        else 
            s[1]=n%13-10+'A';
        if((n/13)<10)
            s[0]=n/13 + '0';
        else
            s[0]=n/13-10+'A';
    }
    s[2]='\0';
}