HrbustOJ 1937 进制转换

水题。。。。。

#include <cstdio>
#include <cstring>
#define MAX 1005
const char* alpha = "ABCDEF";
int main(){
    int n,r;
    while(~scanf("%d%d",&n,&r)){
        int k = 0;
        if(n==0) { printf("0\n"); continue; }
        if(n < 0) { n = -n; putchar('-');}
        int res[MAX] = {0};
        while(n){ res[k++] = n % r; n /= r; }
        for(int i = k - 1;i >= 0;i --) 
            res[i]<10?printf("%d",res[i]):printf("%c",alpha[res[i]-10]);
        printf("\n");
    }
    return 0;
}