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-rw-r--r--ft_puthexupper.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/ft_puthexupper.c b/ft_puthexupper.c
index b5518bf..94b4087 100644
--- a/ft_puthexupper.c
+++ b/ft_puthexupper.c
@@ -1,3 +1,21 @@
+/*
+ft_printf
+Copyright (C) 2026 yctct
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see <https://www.gnu.org/licenses/>.
+*/
+
// using unsigned int as a paramter to deal with with negative numbers
#include "ft_printf.h"