diff --git a/du3/program.c b/du3/program.c
index 6bcc17d..dfb1200 100644
--- a/du3/program.c
+++ b/du3/program.c
@@ -1,5 +1,7 @@
 #include <stdio.h>
-#define STACK_SIZE 101
+#include <stdlib.h>
+#include <string.h>
+#define STACK_SIZE 10
 
 
 struct stack {
@@ -7,6 +9,18 @@ struct stack {
     int size;
 };
 
+void push_stack(struct stack* stack, float value) {
+
+}
+
+float pop_stack(struct stack* stack) {
+
+}
+
+int count_stack(struct stack* stuck) {
+
+}
+
 
 int main() {
     return 0;