--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/final_pre/src/singleLinkedStack.c	Sun Feb 17 05:39:59 2019 +0900
@@ -0,0 +1,18 @@
+__code pushSingleLinkedStack(struct SingleLinkedStack* stack,union Data* data, __code next(...)) {
+    Element* element = new Element();
+    element->next = stack->top;
+    element->data = data;
+    stack->top = element;
+    goto next(...);
+}
+
+__code popSingleLinkedStack(struct SingleLinkedStack* stack, __code next(union Data* data, ...)) {
+    if (stack->top) {
+        data = stack->top->data;
+        stack->top = stack->top->next;
+    } else {
+        data = NULL;
+    }
+    goto next(data, ...);
+}
+