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

//Question no 1 solution
#include <stdio.h>
#include <string.h>

void isPalindrome(char str[])
{

    int l = 0;
    int h = strlen(str) - 1;


    while (h > l)
    {
        if (str[l++] != str[h--])
        {
            printf("%s is Not Palindrome", str);
            return;
        }
    }
    printf("%s is palindrome", str);
}


int main()
{
    isPalindrome("abba");
    isPalindrome("abbccbba");
    isPalindrome("Hello");
    return 0;
}

//problem 2

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

#define str_size 100 //Declare the maximum size of the string


void main()
{
    char str1[str_size], str2[str_size];
    int flg=0;


       printf("Input the 1st string : ");
       fgets(str1, sizeof str1, stdin);

       printf("Input the 2nd string : ");
       fgets(str2, sizeof str2, stdin);

    int i=0;


    while(str1[i] == str2[i])
    {
        if(str1[i] == '\0' || str2[i] == '\0')
            break;

        i++;
    }
    if(str1[i-1] == '\0' && str2[i-1]=='\0')
    {
        flg=0;
    }
    else{
        flg=1;
    }


    if(flg == 0)
    {
        printf("\nThe length of both strings are equal and \nalso both strings are equal.\n\n");
    }
    else{
        printf("Not same");
    }

}


//question 3

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

int main() {
   char s[100];
   int i;
   printf("Enter a string : ");
   gets(s);

   for (i = 0; s[i]!='\0'; i++) {
      if(s[i] >= 'a' && s[i] <= 'z') {
         s[i] = s[i] - 32;
      }
       else if(s[i] >= 'A' && s[i] <= 'Z') {
         s[i] = s[i] + 32;
      }

   }
   printf("\nString = %s", s);
   return 0;
}