1 files changed, 13 insertions, 0 deletions
diff --git a/lib/error.h b/lib/error.h
new file mode 100644
index 0000000..bae532e
--- /dev/null
+++ b/lib/error.h
@@ -0,0 +1,13 @@
+#ifndef ERROR_H
+#define ERROR_H
+
+__attribute__ ((__format__(printf, 1, 2)))
+void error_s(const char* format, ...);
+
+__attribute__ ((__format__(printf, 1, 2)))
+void error(const char* format, ...);
+
+__attribute__ ((__format__(printf, 1, 2)))
+void output(const char* format, ...);
+
+#endif