From 26d5ffc14cc43d8f060307ef1a95a2b83e5cfd78 Mon Sep 17 00:00:00 2001
From: ErrorTP <57261793+ErrorTheProgrammer@users.noreply.github.com>
Date: Sun, 4 Dec 2022 09:39:23 -0500
Subject: [PATCH] Added chrupper

---
 21-shell/libc/string.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/21-shell/libc/string.c b/21-shell/libc/string.c
index 69262d7..8286f91 100644
--- a/21-shell/libc/string.c
+++ b/21-shell/libc/string.c
@@ -33,6 +33,10 @@ int strlen(char s[]) {
     while (s[i] != '\0') ++i;
     return i;
 }
+char chrupper(char chr) {
+  if((chr>96) && (chr<123)) chr ^=0x20;
+  return chr;
+}
 
 void append(char s[], char n) {
     int len = strlen(s);