ACM 494 -- Kindergarten Counting Game

#include <stdio.h>
#include <ctype.h>


int main()
{
    char temp;
    int counter = 0;
    int isWord = 0;
    while((temp = getchar()) != EOF){
        if(temp == '\n'){
            printf("%d\n", counter);
            counter = 0;
            isWord = 0;
        }else{
            if((temp >= 65 && temp <= 90)||(temp >= 97 && temp <= 122)){
                if(isWord == 0){
                    isWord = 1;
                    counter++;
                }
            }else{
                if(isWord == 1){
                    isWord = 0;
                }
            }
        }
    }
    return 0;
}