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C Program to Check if All the Bits of a given Integer is One(1)

C Program to Check if All the Bits of a given Integer is One(1)

    #include <stdio.h>

    int all_bits_one(int);

    int count = 0;

    void main()

    {

        int j;

        printf("enter the number:");

        scanf("%d", &j);

        j++;

        all_bits_one(j);

        if (count)

        {

            printf("false");

        }

        else

        {

            printf("true");

        }

    }

    /* checks whether all bits are 1 */

    int all_bits_one(int x)

    {    

        if (x == 1)

            return 0;

        if (x % 2 != 0)

        {

            count++;

        }

        else

        {

            x = x / 2;

            all_bits_one(x);

        }

    }

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