/*
 * Author  : Amit Dutta <amitdutta4255@gmail.com>
 * Date    : 08 Feb 2026
 * Repo    : https://github.com/notamitgamer/bsc
 * License : MIT License (See the LICENSE file for details)
 */

/* Decode student information (Year, Stream, Room No) packed into an integer array.
*/
/* Let Us C, Chap- 21 (Operations on Bits), Qn No.: A(c) */

/* This file is auto-generated by a bot. */
/* This code is not compiled; it is for reference only. */


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

int main()
{
    int data[] = {273, 548, 786, 1096};
    int n = 4, i;
    int val, year, stream_bits, room;

    for (i = 0; i < n; i++)
    {
        val = data[i];

        // Room Number: Rest of the bits (Assuming starting from bit 8)
        room = val >> 8;

        printf("Student %d (Raw: %d):\n", i + 1, val);
        printf("  Room No: %d\n", room);

        // Year: Bits 0-3
        printf("  Year: ");
        if (val & (1 << 0)) printf("1st Year");
        else if (val & (1 << 1)) printf("2nd Year");
        else if (val & (1 << 2)) printf("3rd Year");
        else if (val & (1 << 3)) printf("4th Year");
        else printf("Unknown");
        printf("\n");

        // Stream: Bits 4-7 (Mech, Chem, Elec, CS)
        printf("  Stream: ");
        if (val & (1 << 4)) printf("Mechanical");
        else if (val & (1 << 5)) printf("Chemical");
        else if (val & (1 << 6)) printf("Electronics");
        else if (val & (1 << 7)) printf("CS");
        else printf("Unknown");
        printf("\n\n");
    }

    return 0;
}