cooked

5.c

@@ -0,0 +1,70 @@
+#include<stdio.h>
+#include<fcntl.h>
+#include<semaphore.h>
+
+int main(){
+    int n;
+    printf("\nENter buffer size: ");
+    scanf("%d", &n);
+
+    int buffer[n];
+    int in =0, out= 0;
+
+    sem_unlink("/mutex");
+    sem_unlink("/empty");
+    sem_unlink("/full");
+
+    sem_t *mutex = sem_open("/mutex", O_CREAT, 0644, 1);  
+    sem_t *empty = sem_open("/empty", O_CREAT, 0644, n);  
+    sem_t *full  = sem_open("/full",  O_CREAT, 0644, 0);
+
+    int ch, item;
+    while(1){
+        printf("\n--- Producer Consumer ---");
+        printf("\n1. Produce (Write)");
+        printf("\n2. Consume (Read)");
+        printf("\n3. Exit");
+        printf("\nEnter choice: ");
+        scanf("%d", &ch);
+
+        if(ch==1){
+            printf("\nEnter item to write: ");
+            scanf("%d", &item);
+
+            sem_wait(empty);
+            sem_wait(mutex);
+            buffer[in]= item;
+            printf("\nProduced: %d at buffer[%d]", item, in);
+            in = (in+1)%n;
+            sem_post(mutex);
+            sem_post(full);
+
+        }
+
+        else if(ch==2){
+       
+            sem_wait(full);
+            sem_wait(mutex);
+            item = buffer[out];
+            printf("\nconsumed: %d at buffer[%d]", item, out);
+            out = (out+1)%n;
+            sem_post(mutex);
+            sem_post(empty);
+
+        }
+
+        else if (ch == 3) {
+            break;
+        }
+        else {
+            printf("Invalid choice\n");
+        }
+
+    }
+
+    sem_close(mutex); sem_close(full); sem_close(empty);
+    sem_unlink("/mutex");
+    sem_unlink("/empty");
+    sem_unlink("/full");
+    return 0;
+}