problem-29

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

int mutex = 1; // Semaphore for critical section
int full = 0;  // Count of full slots
int empty = 10; // Count of empty slots
int x = 0; // Item count

void producer() {
    // Entry section (critical section start)
    --mutex;
    ++full;
    --empty;
    x++;
    printf("\nProducer produces item %d", x);
    ++mutex;
    // Exit section (critical section end)
}

void consumer() {
    // Entry section (critical section start)
    --mutex;
    --full;
    ++empty;
    printf("\nConsumer consumes item %d", x);
    x--;
    ++mutex;
    // Exit section (critical section end)
}

int main() {
    int n, i;

    printf("\n1. Press 1 for Producer"
           "\n2. Press 2 for Consumer"
           "\n3. Press 3 for Exit");

    for (i = 1; i > 0; i++) {
        printf("\nEnter your choice: ");
        scanf("%d", &n);

        switch (n) {
            case 1:
                if (mutex == 1 && empty != 0) {
                    producer();
                } else {
                    printf("Buffer is full!");
                }
                break;
            case 2:
                if (mutex == 1 && full != 0) {
                    consumer();
                } else {
                    printf("Buffer is empty!");
                }
                break;
            case 3:
                exit(0);
                break;
            default:
                printf("Invalid choice!");
                break;
        }
    }

    return 0;
}