From e66d9cd721427e2afdde2512cae87ab7b8dcb517 Mon Sep 17 00:00:00 2001
From: Boris Stefanovic <owldev@bluewin.ch>
Date: Mon, 29 Nov 2021 11:09:47 +0100
Subject: [PATCH] ADD: stack_print: add special case for empty stack
---
stack.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/stack.c b/stack.c
index 4699c29..df4e961 100644
--- a/stack.c
+++ b/stack.c
@@ -18,9 +18,13 @@ void stack_peek(stack s, int *value){
}
void stack_print(const stack s) {
- printf(" TOP\n--------------------\n");
- for (int* spot = s.data + s.top; spot >= s.data; --spot) {
- printf("%8d | %12d\n", spot - s.data, *spot);
+ if (s.top >= 0) {
+ printf(" TOP\n--------------------\n");
+ for (int* spot = s.data + s.top; spot >= s.data; --spot) {
+ printf("%8d | %12d\n", spot - s.data, *spot);
+ }
+ printf("--------------------\n BOTTOM\n");
+ } else {
+ printf("STACK EMPTY\n");
}
- printf("--------------------\n BOTTOM\n");
}
--
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