diff --git a/abc.c b/abc.c
new file mode 100644
index 00000000..ff99c74e
--- /dev/null
+++ b/abc.c
@@ -0,0 +1 @@
+this is a c program file.
diff --git a/newfile.txt b/newfile.txt
new file mode 100644
index 00000000..8b137891
--- /dev/null
+++ b/newfile.txt
@@ -0,0 +1 @@
+