C Programming Code Examples

C > Bitwise Operators Code Examples

Check whether the given Number is Palindrome or not using Bitwise Operator

Check whether the given Number is Palindrome or not using Bitwise Operator

    #include <stdio.h>

    #include <string.h>

    #define SIZE 8

    /* Function Prototype */

    int is_palindrome(unsigned char[]);

    void main()

    {

        int x1, x2 = 0, i = 0, j = SIZE - 1, res;

        unsigned char c[SIZE];

        printf("Enter a number(max 255)");

        scanf("%d", &x1);

        x2 = x1;

        while (x1 != 0)

        {

            c[j] = x1&1;

            j--;

            x1 = x1>>1; /* Shifting right the given number by 1 bit */

        }

        printf("The number %d in binary is:", x2);

        for (i = 0;i < SIZE;i++)

        {

            printf("%d", c[i]);

        }

        res = is_palindrome(c);    /* Calling Function */

        if (res == 0)

        {

            printf("\nnumber is palindrome\n");

        }

        else

        {

            printf("\nnumber is not palindrome\n");

        }

    }

    /* Code to check if the number is palindrome or not */

    int is_palindrome(unsigned char c[])

    {

        char temp[SIZE];

        int i, j, flag = 0;

        for (i = 0, j = SIZE - 1;i < SIZE, j >= 0;i++, j--)

        {

            temp[j] = c[i];

        }

        for (i = 0;i < SIZE;i++)

        {

            if (temp[i] != c[i])

            {

                flag = 1;

            }

        }

        return flag;

    }