HDU 2072 单词数

#include<stdio.h>
#include<string.h>
int n;
char str[10005],ch[1005][1005];
void sort(  )
{
int i = 0;
while( str[i] )
{
if( str[i] == ' ' )
{
++i;
continue;
}
int j = 0;
while( str[i] && str[i] != ' ' )
ch
[j++] =str[i++];
ch
[j] = 0;
int f = 1;
for( int j = 0; j < n; ++j )
if( !strcmp( ch[j],ch
) )
{
f = 0;
break;
}
if( f )
++n;
}
}
int main( )
{
while( gets( str ) )
{
n = 0;
if( str[0] == '#' )
break;
sort(  );
printf( "%d\n",n );
}
return 0;
}