day 4

1 files changed, 2 insertions, 0 deletions

diff --git a/input.h b/input.h
index 21f388c..4507d08 100644
--- a/input.h
+++ b/input.h
@@ -29,4 +29,6 @@ void input_int_free(struct input_int* input);
 
 void input_str_free(struct input_str* input);
 
+char* copy_line(char* line);
+
 #endif