maow

Homework/bintreeCalk/head.h

@@ -8,3 +8,18 @@ typedef struct tree
     struct tree *left;
     struct tree *right;
 } Tree;
+
+Tree *tnew(void);
+Tree *leaf(char c);
+Tree *maketree(char expr[], int first, int last);
+unsigned char priority(char c);
+int lastop(char expr[], int first, int last);
+int calculate(Tree *root);
+void showtree(Tree *root, int level);
+Tree *create(unsigned char key);
+Tree *add(Tree *root, unsigned char key);
+Tree *search(Tree *root, unsigned char key);
+Tree *min(Tree *root);
+Tree *max(Tree *root);
+Tree *nextdel(Tree *root);
+void delete(Tree *del);