[UVa]494-Kindergarten Counting Game

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

#define N 10000
char a[N];

int main()
{
    while(gets(a) != NULL)
    {
        int count = 0;
        int found;
        int n = strlen(a);
        for(int i = 0; i < n; i++)
        {
            if(isalpha(a[i]))
                found = 1;
            else
                {
                    if(found)
                        count++;
                    found = 0;
                }
        }
        printf("%d\n", count);
    }
    return 0;
}