Add DS/C/Lab/Week4/circq.c

DS/C/Lab/Week4/circq.c

@@ -0,0 +1,63 @@
+#include <stdio.h>
+
+#define MAX_SIZE 5
+
+int queue[MAX_SIZE];
+int front = 0;
+int rear = 0;
+
+void enqueue(int data) {
+    if ((rear + 1) % MAX_SIZE == front) {
+        printf("Queue is full\n");
+        return;
+    }
+    queue[rear] = data;
+    rear = (rear + 1) % MAX_SIZE;
+}
+
+int dequeue() {
+    if (front == rear) {
+        printf("Queue is empty\n");
+        return -1;
+    }
+    int data = queue[front];
+    front = (front + 1) % MAX_SIZE;
+    return data;
+}
+
+void printQueue() {
+    if (front == rear) {
+        printf("Queue is empty\n");
+        return;
+    }
+    int i = front;
+    while (i != rear) {
+        printf("%d ", queue[i]);
+        i = (i + 1) % MAX_SIZE;
+    }
+    printf("\n");
+}
+
+int main() {
+    int choice, data;
+    while (1) {
+        printf("1. Enqueue\n2. Dequeue\n3. Print Queue\n4. Exit\n");
+        scanf("%d", &choice);
+        switch (choice) {
+            case 1:
+                printf("Enter data: ");
+                scanf("%d", &data);
+                enqueue(data);
+                break;
+            case 2:
+                data = dequeue();
+                if (data != -1) printf("Dequeued: %d\n", data);
+                break;
+            case 3:
+                printQueue();
+                break;
+            case 4:
+                return 0;
+        }
+    }
+}