hackerrank-solutions/Strong Password at master · meshubhama01/hackerrank-solutions · GitHub

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//Code in C language


#include <math.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <assert.h>
#include <limits.h>
#include <stdbool.h>

int islower(int c);
int isupper(int c);
int isdigit(int c);


int main() {
    int n;
    scanf("%d", &n);
    char password[100];
    scanf("%s", password);

    int arr[4];
    int q=0;


 for( int i=0; i<n; i++)
 {
    if ( islower(password[i]))
    {
         arr[1] = 1;
    }

     if(isupper(password[i]))
     {
         arr[2] = 1;
     }

      if(isdigit(password[i]))
     {
         arr[0] = 1;
     }


     if ( password[i] == '!'  || password[i] == '@' || password[i] == '#'  || password[i] == '$' || password[i] == '^' || password[i] == '&' || password[i] == '*' || password[i] == '(' || password[i] == ')' || password[i] == '-' || password[i] == '+'  )
     {
         arr[3] =1;
     }


 }


          for ( int i =0; i < 4; i++)
    {

        if ( arr[i] != 1)
        {
            q++;
        }


    }


if ( n+q >=6)
{
    printf("%d",q);
}

    else
    {
        int z = 6 - (n+q);

        q = q+z;

         printf("%d",q);
    }


    return 0;
}