rest of the codes

MaxHeap.c

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+#include <stdio.h>
+#include <stdlib.h>
+
+#define MAX 50
+
+int heap[MAX];
+int heapSize = 0;
+
+// Function to insert an item into max heap
+void insert(int item) {
+    int i;
+
+    if (heapSize == MAX - 1) {
+        printf("Heap is full. Cannot insert.\n");
+        return;
+    }
+
+    // First insert at last position
+    heapSize++;
+    i = heapSize;
+
+    // Percolate up
+    while (i > 1 && item > heap[i / 2]) {
+        heap[i] = heap[i / 2];  // move parent down
+        i = i / 2;              // move up
+    }
+
+    heap[i] = item;
+    printf("Inserted %d into heap.\n", item);
+}
+
+// Function to delete max (root) from heap
+int deleteMax() {
+    int i, child;
+    int item, last;
+
+    if (heapSize == 0) {
+        printf("Heap is empty. Cannot delete.\n");
+        return -1;
+    }
+
+    item = heap[1];          // max element
+    last = heap[heapSize];   // last element
+    heapSize--;
+
+    i = 1;
+
+    // Percolate down
+    while (2 * i <= heapSize) {
+        // left child
+        child = 2 * i;
+
+        // choose larger child if right child exists
+        if (child < heapSize && heap[child + 1] > heap[child])
+            child++;
+
+        if (last >= heap[child])
+            break;
+
+        heap[i] = heap[child];  // move child up
+        i = child;
+    }
+
+    heap[i] = last;
+
+    return item;
+}
+
+// Display heap contents (array form)
+void display() {
+    int i;
+
+    if (heapSize == 0) {
+        printf("Heap is empty.\n");
+        return;
+    }
+
+    printf("Heap contents (array form):\n");
+    for (i = 1; i <= heapSize; i++)
+        printf("%d ", heap[i]);
+    printf("\n");
+}
+
+int main() {
+    int choice, item, deleted;
+
+    while (1) {
+        printf("\n=== MAX HEAP (PRIORITY QUEUE) MENU ===\n");
+        printf("1. Insert\n");
+        printf("2. Delete Max\n");
+        printf("3. Display Heap\n");
+        printf("4. Exit\n");
+        printf("Enter choice: ");
+        scanf("%d", &choice);
+
+        switch (choice) {
+        case 1:
+            printf("Enter item to insert: ");
+            scanf("%d", &item);
+            insert(item);
+            break;
+
+        case 2:
+            deleted = deleteMax();
+            if (deleted != -1)
+                printf("Deleted item (max): %d\n", deleted);
+            break;
+
+        case 3:
+            display();
+            break;
+
+        case 4:
+            printf("Exiting...\n");
+            exit(0);
+
+        default:
+            printf("Invalid choice. Try again.\n");
+        }
+    }
+
+    return 0;
+}