init

linkedStack.c

@@ -0,0 +1,54 @@
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+struct Node {
+  int data;
+  struct Node *ptr;
+};
+
+struct Node *top = NULL;
+
+void push(int v) {
+  struct Node *new = (struct Node *)malloc(sizeof(struct Node));
+  new->data = v;
+  new->ptr = top;
+  top = new;
+}
+
+int pop() {
+  struct Node *temp = top;
+  int v = temp->data;
+  top = temp->ptr;
+
+  free(temp);
+  return v;
+}
+int peek() {
+  if (top == NULL) {
+    printf("Stack empty\n");
+    return -1;
+  }
+  return top->data;
+}
+
+void display() {
+  struct Node *temp = top;
+  printf("Stack: ");
+  while (temp != NULL) {
+    printf("%d ", temp->data);
+    temp = temp->ptr;
+  }
+  printf("\n");
+}
+int main() {
+  push(10);
+  push(20);
+  push(30);
+  display();
+
+  printf("Popped: %d\n", pop());
+  display();
+
+  printf("Top: %d\n", peek());
+}