UVa - 494 - Kindergarten Counting Game

#include<stdio.h>
#include<string.h>
int main()
{
    char a[100000];
    while(gets(a)!=NULL)
    {
        long count=0,i,j=0,k,l,m,n=0;
        for(i=0;i<strlen(a)+1;i++)
        {
            if((a[i]>='a'&&a[i]<='z')||(a[i]>='A'&&a[i]<='Z'))
            {
                j=1;
            }
            else
            {
                if(j==1)
                {
                    count++;
                    j=0;
                }
                else
                {
                    j=0;
                }
            }
        }
        printf("%ld\n",count);
    }
}