/*

* =========================================================

* Filename: word_count.c

* Description: source http://uva.onlinejudge.org/external/4/494.html

* 在C programming language 中的单词记数问题

*

* =========================================================

*/

#include <stdio.h>

#include <stdbool.h>

#define IsLetter(c) ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'z'))

int main(){

int c;

int count = 0;

bool InWord = false;

while((c = getchar()) != EOF){

if(c == '\n'){

printf("%d\n",count);

count = 0; //reset count

}

else{

if(!IsLetter(c))

InWord = false;

else if (!InWord){ //same with if(IsLetter(c) && !InWord)

++count;

InWord = true;

}

}

}

return 0;

}