#include <stdio.h>
#define passlength 13
int main ()
{
    int length=-1, bigletters=0, smallletters=0, numbers=0, symbols=0, i, j, check=0, counter=0, flag=0, combination=0;
    char password[passlength];
    printf ("Please enter password: ");
    for (i=0;flag==0;i++){
        length++;
        password[i]=getchar();
        printf ("%c", password[i]);
        if (password[i]=='\n'){
            flag=1;
        }
        else if ((password[i]>='A')&&(password[i]<='Z')){
            bigletters++;
        }
        else if (password[i]>='a'&&password[i]<='z'){
            smallletters++;
        }
        else if (password[i]>='0'&&password[i]<='9'){
            numbers++;
        }
        else if ((password[i]>=0&&password[i]<=47)||(password[i]>=58&&password[i]<=64)||(password[i]>=90&&password[i]<=96)||(password[i]>123)){
            symbols++;
        }
        else if (numbers==0){

        }
        else if (bigletters==0 && smallletters==0){

        }

        if ((i!=0)&&(((password[i])==(password[i-1]+1))||((password[i])==(password[i-1]-1))))   {
            combination++;
        }





    }




















    if (length<8||length>13){
        printf ("Invalid password length");
        return 0;
    }
    else {
        printf ("password strength index: %d", smallletters);
        return 0;
    }


}