password

#include<stdio.h>
#include<string.h>
int main()
{
    int i, len, count1 = 0, count2 = 0, count3 = 0;
    char password[10000];

    gets(password);
    len = strlen(password);

   if(len >= 8)
    {
        //null character soho total 9 ta character password e thakbe
        for(i = 0; i < len; i++)
        {
            if(password[i] >= 'a' && password[i] <= 'z')
                count1++;
            else if(password[i] >= 'A' && password[i] <= 'Z')
                count2++;
            else
                count3++;
            //capital and small letter na hole seta special character,oitar jonnoi count3 use korsi

        }

        if(count1 != 0 && count2 != 0 && count3 != 0)
        {
            printf("Valid Password!\n");

        }
        else
        {
            printf("Invalid Password!\n");
        }

    }
}