1 files changed, 13 insertions, 3 deletions
diff --git a/example/pushdown.c b/example/pushdown.c
index ada8d73..bd34bb8 100644
--- a/example/pushdown.c
+++ b/example/pushdown.c
@@ -1,13 +1,20 @@
-typedef double pushdown_value_t;
+// pushdown.c - Example usage of pushdown.h stack automaton
+
+#include <stdio.h>
+
+typedef double stack_value_t;
 #define STACK_IMPLEMENTATION
+#include "../include/stack.h"
+
+typedef double pushdown_value_t;
 #define PUSHDOWN_IMPLEMENTATION
 #include "../include/pushdown.h"
 
 int main() {
   pushdown_instruction_t instructions[] = {PUSH, COPY, MUL, END};
 
-  stack_t input = {};
-  stack_t output = {};
+  stack_t input = {0};
+  stack_t output = {0};
 
   stack_init(&input);
   stack_init(&output);
@@ -19,4 +26,7 @@ int main() {
   while (output.size) {
     printf("%lf\n", stack_pop(&output));
   }
+
+  stack_free(&input);
+  stack_free(&output);
 }
 \ No newline at end of file