【pat】b1002 写出这个数

#include<stdio.h>
#include<string.h>
char arr[110];

int getsum() {
    int sum = 0;
 int len = strlen(arr);
   for (int i = 0; i<len; i++) {
     sum += arr[i] - '0';
 }
    return sum;
}
int main() {
   scanf("%s", arr);
    int sum = getsum();
  sprintf(arr, "%d", sum);
 int len = strlen(arr);
   for (int i = 0; i<len; i++) {
     if (i != 0) printf(" ");
     if (arr[i] == '1')
           printf("yi");
        else if (arr[i] == '2')
          printf("er");
        else if (arr[i] == '3')
          printf("san");
       else if (arr[i] == '4')
          printf("si");
        else if (arr[i] == '5')
          printf("wu");
        else if (arr[i] == '6')
          printf("liu");
       else if (arr[i] == '7')
          printf("qi");
        else if (arr[i] == '8')
          printf("ba");
        else if (arr[i] == '9')
          printf("jiu");
       else if (arr[i] == '0')
          printf("ling");
  }
    return 0;
}

char data[10][20] = { "ling","yi","er","san","si","wu","liu","qi","ba","jiu" };
printf("%s", data[arr[i] - '0']);