1 files changed, 29 insertions, 0 deletions
diff --git a/src/02/05/stack.c b/src/02/05/stack.c
new file mode 100644
index 0000000..18a344a
--- /dev/null
+++ b/src/02/05/stack.c
@@ -0,0 +1,29 @@
+#include "stack.h"
+#include <stdlib.h>
+
+Node *node_init(int data) {
+  Node *node = malloc(sizeof(Node));
+  node->next = NULL;
+  node->data = data;
+  return node;
+}
+
+Stack *stack_init(int data) {
+  Stack *stack = malloc(sizeof(Stack));
+  stack->head = node_init(data);
+  return stack;
+}
+
+int stack_size(Stack *self) {
+  if (!self || !self->head)
+    return 0;
+
+  int count;
+  Node *current = self->head;
+  while (current) {
+    ++count;
+    current = current->next;
+  }
+
+  return count;
+}