zoj 1334

代码如下：

#include <stdio.h>#include <math.h>#include <string.h>char zimu[]="0123456789ABCDEF";int main(){char str[10];int re[10];int a,b,length,i,sum,j;memset(re,0,10);memset(str,0,10);while(scanf("%s%d%d",str,&a,&b)!=EOF){sum=0;length=strlen(str);for (i=length-1;i>=0;i--){if (str[i]>='A'&&str[i]<='F'){sum=sum+(str[i]-'A'+10)*(int)pow(a,length-1-i);}else{sum=sum+(str[i]-'0')*(int)pow(a,length-1-i);}}i=0;while(sum>0){re[i]=sum%b;sum=sum/b;i++;}if (i>7){printf("  ERROR");}else{for (j=i;j<7;j++){printf(" ");}for (j=i-1;j>=0;j--){printf("%c",zimu[re[j]]);}}printf("\n");memset(re,0,10);     memset(str,0,10);}return 0;}