assignment problem 2

assignment1/problem2/validbrackets.h

@@ -0,0 +1,31 @@
+/*
+ * Author: Walter
+ * Student ID: 1930006025
+ * Assignment_1_problem_2
+ * validbrackets header files
+ */
+
+#ifndef VAILDBRACKETS
+#define VAILDBRACKETS
+
+#include <stdbool.h>
+
+#include "stack.h"
+
+/* cvalid a string brackets,
+ * return true if empty string,
+ * return false if NULL string pointer */
+bool ValidBrackets(char *str);
+
+/* get the index number of left bracket,
+ * return -1 if c is not a left bracket */
+int IndexLeftBracket(char c);
+
+/* get the index number of right breacket,
+ * return -1 if c is not a left bracket */
+int IndexRightBracket(char c);
+
+/* compare two brackets if they match */
+bool MatchBracket(char left, char right);
+
+#endif