HDU4278-Faulty Odometer

http://acm.hdu.edu.cn/showproblem.php?pid=4278

竟然是八进制转十进制- -，网络赛第一题。

#include<stdio.h>
#include<string.h>
int base[58];
char num[8];
void init()
{
    base['0']=0;
    base['1']=1;
    base['2']=2;
    base['4']=3;
    base['5']=4;
    base['6']=5;
    base['7']=6;
    base['9']=7;
}
int solve()
{
    int n=strlen(num),power=1,ans=0,i;
    for(i=n-1;i>=0;i--)
    {
        ans+=base[num[i]]*power;
        power*=8;
    }
    return ans;
}
int main(void)
{
    init();
    while(scanf("%s",num)!=EOF)
    {
        if(num[0]=='0')
           break;
        printf("%s: %d\n",num,solve());
    }
    return 0;
}