华为机试 翻译电话号码

网上找的程序，比较简洁，用到了strncmp函数:
// huawei_22.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include<stdio.h>
#include<string.h>
#include<stdlib.h>

int main()
{
   char a[11][11]={"zero","one","two","three","four","five","six","seven","eight","nine","double"};
   char *s,out[20];
   int i=0,j=0,f=0,d=0,k=0,count=0;
  
   s=(char *)malloc(sizeof(char));
   gets(s);
  
   while(*s!='\0')
   {
    f=0;
    if(*s=='Z'||*s=='O'||*s=='T'||*s=='F'||*s=='S'||*s=='E'||*s=='N'||*s=='D')
     *s+=32;
     for(i=0;i<11;i++)
  {
   if(!strncmp(s,a[i],strlen(a[i])) && i<10)
   {    out[k++]=i+'0';
        s=s+strlen(a[i]);
     f=1;
     if(d==1)
     {
       out[k++]=i+'0';
    d=0;
     }
   }
   else if(!strncmp(s,a[i],strlen(a[i])) && i==10)
   {
      d=1;
   f=1;
   s=s+strlen(a[i]);
   count++;
   }
  }
  if(f==0|| count>1)
  {
    printf("error!\n");
    return 0;
  }
   }
   out[k]='\0';
   if(d==1)
    printf("error!\n");
   else
    puts(out);
   getchar();
}