A1027 Colors in Mars (20)（20 分）
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
思考
给的数字范围是有限的168<(13^2)
AC代码
#include <stdio.h>
char radix[13] = {
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C'
};
int main() {
int r, g, b;
scanf("%d%d%d", &r, &g, &b);
printf("#");
printf("%c%c", radix[r / 13], radix[r % 13]);
printf("%c%c", radix[g / 13], radix[g % 13]);
printf("%c%c", radix[b / 13], radix[b % 13]);
return 0;
}