1027. Colors in Mars (20)【进制转换】——PAT (Advanced Level) Practise

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概述

题目信息

1027. Colors in Mars (20)

时间限制400 ms
内存限制65536 kB
代码长度限制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 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

解题思路

进制转换

AC代码

#include <stdio.h>
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;
}