#include #include #include #include #include #include #define NUMBER_OF_STRING 4 #define STRING_SIZE 10 #define TRAY_SIZE 30 pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER; int customers, bakers, cupcake_number, MAX_day, day, cake_completed; int count_cupcake = 0; int cake_produced = 0; char flavors[NUMBER_OF_STRING][STRING_SIZE] = { "chocolate", "vanilla", "strawberry", "lemon" }; typedef struct { int number; char flavor[STRING_SIZE]; } Cupcake; void *baker(void *arg) { int baker_id = *((int *)arg); srand(time(NULL)); for (int i = 0; i < cupcake_number; i++) { usleep(rand() % 1000000); // Simulate baking time pthread_mutex_lock(&mutex); if (count_cupcake >= TRAY_SIZE) { printf("Baker %d: Tray is full. Waiting for customers\n", baker_id); pthread_mutex_unlock(&mutex); continue; } Cupcake cupcake; cupcake.number = cake_produced++; strcpy(cupcake.flavor, flavors[rand() % NUMBER_OF_STRING]); printf("Baker %d: Produced Cupcake %d with flavor %s\n", baker_id, cupcake.number, cupcake.flavor); count_cupcake++; pthread_mutex_unlock(&mutex); } return NULL; } void *customer(void *arg) { int customer_id = *((int *)arg); srand(time(NULL)); for (int i = 0; i < cupcake_number; i++) { usleep(rand() % 1000000); // Simulate eating time pthread_mutex_lock(&mutex); if (count_cupcake <= 0) { printf("Customer %d: Tray is empty. Waiting for cupcakes\n", customer_id); pthread_mutex_unlock(&mutex); continue; } count_cupcake--; cake_completed++; printf("Customer %d: Consumed Cupcake %d\n", customer_id, cake_completed); pthread_mutex_unlock(&mutex); } return NULL; } int main() { int choice; printf("Enter 1 to print to console or 2 to print to file: "); scanf("%d", &choice); FILE *file = NULL; if (choice == 2) { char filename[100]; printf("Enter the filename to save the output: "); scanf("%s", filename); file = fopen(filename, "w"); if (file == NULL) { printf("Error opening file!\n"); return 1; } } printf("Enter the number of bakers: "); scanf("%d", &bakers); printf("Enter the number of customers: "); scanf("%d", &customers); printf("Enter the number of cupcakes per baker/customer: "); scanf("%d", &cupcake_number); printf("Enter the number of days to simulate: "); scanf("%d", &MAX_day); pthread_t bakers_threads[bakers]; pthread_t customers_threads[customers]; int baker_ids[bakers]; int customer_ids[customers]; for (int i = 0; i < bakers; i++) { baker_ids[i] = i + 1; pthread_create(&bakers_threads[i], NULL, baker, &baker_ids[i]); } for (int i = 0; i < customers; i++) { customer_ids[i] = i + 1; pthread_create(&customers_threads[i], NULL, customer, &customer_ids[i]); } for (int i = 0; i < bakers; i++) { pthread_join(bakers_threads[i], NULL); } for (int i = 0; i < customers; i++) { pthread_join(customers_threads[i], NULL); } if (choice == 2) { fprintf(file, "Simulation completed!\n"); fclose(file); } else { printf("Simulation completed!\n"); } return 0; }

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