From 1537bb705bc7952fe8a0c94cacc9c434cba8d23d Mon Sep 17 00:00:00 2001
From: Aryadev Chavali <aryadev@aryadevchavali.com>
Date: Mon, 22 Nov 2021 05:52:49 +0000
Subject: (list)~NULL -> nullptr

C++ styling.
---
 list.cpp | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/list.cpp b/list.cpp
index 5dc6d18..83e7068 100644
--- a/list.cpp
+++ b/list.cpp
@@ -15,7 +15,7 @@ struct List
 
   ~List()
   {
-    if (next == NULL)
+    if (next == nullptr)
       return;
     delete next;
   }
@@ -25,31 +25,31 @@ template <typename T>
 List<T> *append(List<T> *lst, T value)
 {
   List<T> *node;
-  if (lst == NULL)
+  if (lst == nullptr)
   {
     node        = new List<T>;
     node->value = value;
-    node->next  = NULL;
+    node->next  = nullptr;
     return node;
   }
 
-  for (node = lst; node->next != NULL; node = node->next)
+  for (node = lst; node->next != nullptr; node = node->next)
     continue;
 
   node->next        = new List<T>;
   node->next->value = value;
-  node->next->next  = NULL;
+  node->next->next  = nullptr;
   return lst;
 }
 
 /** Reverse a list
  */
 template <typename T>
-List<T> *reverse(List<T> *lst, List<T> *prev = NULL)
+List<T> *reverse(List<T> *lst, List<T> *prev = nullptr)
 {
   auto next = lst->next;
   lst->next = prev;
-  if (next == NULL)
+  if (next == nullptr)
     return lst;
   return reverse(next, lst);
 }
@@ -65,7 +65,7 @@ std::ostream& operator<<(std::ostream& ostream, const List<T> *lst)
 
 int main(void)
 {
-  auto lst = append<int>(NULL, 1);
+  auto lst = append<int>(nullptr, 1);
   for (int i = 2; i < 10; ++i)
     lst = append(lst, i);
   std::cout << lst << std::endl;
-- 
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