PAT (Basic Level) Practice （中文）1002 写出这个数

#include<stdio.h>
int main()
{
    char str[1000000];
    char arr[10][10]={"ling","yi","er","san","si","wu","liu","qi","ba","jiu"};
    int temp[1000];
    int t=0;
    gets(str);
    int i;
    int sum=0;
    for(i=0;i<strlen(str);i++)
    {
        sum+=str[i]-'0';
    }
    while(sum)
    {
        temp[t]=sum%10;
        t++;
        sum/=10;
    }
    for(i=t-1;i>=0;i--)
    {
        if(i!=0)printf("%s ",arr[temp[i]]);
        else printf("%s\n",arr[temp[i]]);
    }
    return 0;
}