学步园

#include<stdio.h>
int main(){
  char str[110];
  char dtoe[10][20]={"zero","one","two","three","four","five","six","seven","eight","nine"};
  int i,sum=0;
  scanf("%s",str);
  for(i=0;str[i]!='\0';i++){
	sum=sum+str[i]-'0';	
  }
  if(sum<10){
	printf("%s\n",dtoe[sum]);
  }
  else if(sum<100){
	printf("%s ",dtoe[sum/10]);
	printf("%s\n",dtoe[sum%10]);
  }
  else if(sum<1000){
	printf("%s ",dtoe[sum/100]);
	printf("%s ",dtoe[sum%10/10]);
	printf("%s\n",dtoe[sum%10]);
  }
  return 0;
}