1 files changed, 11 insertions, 0 deletions
diff --git a/src/02/05/stack.h b/src/02/05/stack.h
new file mode 100644
index 0000000..1e7d885
--- /dev/null
+++ b/src/02/05/stack.h
@@ -0,0 +1,11 @@
+typedef struct node {
+  struct node *next;
+  int data;
+} Node;
+
+typedef struct {
+  Node *head;
+} Stack;
+
+Stack *stack_init(int data);
+int stack_size(Stack *self);