added header

1 files changed, 13 insertions, 0 deletions

diff --git a/tree.h b/tree.h
new file mode 100644
index 0000000..cf4d825
--- /dev/null
+++ b/tree.h
@@ -0,0 +1,13 @@
+enum nodeType {
+	BIOP,
+	UNOP,
+	LTTR
+};
+
+typedef struct {
+	enum nodeType type;
+	char el;
+	struct node *child[2];
+} node;
+
+node* parse(const char *str);