From 50386f6cd73eb33aa8d38504cb5e7f5702b84eba Mon Sep 17 00:00:00 2001
From: "narindra.rajohnso" <narindra-hasimanjaka-david.rajohnson@etu.hesge.ch>
Date: Thu, 25 Nov 2021 21:53:56 +0100
Subject: [PATCH] * Added stack_peek function to peek at the top of the stack.
---
stack.c | 11 ++++++++---
stack.h | 2 ++
2 files changed, 10 insertions(+), 3 deletions(-)
diff --git a/stack.c b/stack.c
index 1813ff5..2746918 100644
--- a/stack.c
+++ b/stack.c
@@ -1,7 +1,6 @@
-#include "stack.h"
-#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
+#include "stack.h"
#define DEFAULT_CAPACITY 4
@@ -10,4 +9,10 @@ void stack_init(stack *s)
s->top = -1;
s->capacity = DEFAULT_CAPACITY;
s->data = malloc(sizeof(int) * DEFAULT_CAPACITY);
-}
\ No newline at end of file
+}
+
+void stack_peek(stack s, int *value){
+ if (!stack_is_empty(s)) {
+ *value = s.data[s.top];
+ }
+}
diff --git a/stack.h b/stack.h
index dfdc9a1..8da80c2 100644
--- a/stack.h
+++ b/stack.h
@@ -9,4 +9,6 @@ typedef struct _stack {
void stack_init(stack *stack);
+void stack_peek(stack s, int *value);
+
#endif
--
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