1027. Colors in Mars (20) -- PAT (Advanced Level) Practise

1027. Colors in Mars (20) -- PAT (Advanced Level) Practise
Question Information

1027. Colors in Mars (20)

Time limit 400 MS
The memory limit is 65536 kB.
Code length limit: 16000 B

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 shoshould 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

Solutions

Hexadecimal conversion

AC code

#include 
  
   void outc(int a){    if (a <= 9) printf("%d", a);    else printf("%c", a-10+'A');}void out(int a){    if (a >= 13){        outc(a/13);        outc(a%13);    }else{        printf("0");        outc(a);    }}int main(){    int r, g, b;    scanf("%d%d%d", &r, &g, &b);    printf("#");    out(r);    out(g);    out(b);    printf("\n");    return 0;}