diff --git a/feature1.c b/feature1.c
new file mode 100644
index 0000000..c4a12bf
--- /dev/null
+++ b/feature1.c
@@ -0,0 +1,6 @@
+#include "feature1.h"
+
+void feature1()
+{
+	printf("feature1\n");
+}
\ No newline at end of file
diff --git a/feature1.h b/feature1.h
new file mode 100644
index 0000000..1221061
--- /dev/null
+++ b/feature1.h
@@ -0,0 +1,6 @@
+#ifndef _FEATURE1_H_
+#define _FEATURE1_H_
+
+void feature1();
+
+#endif
\ No newline at end of file
diff --git a/main.c b/main.c
index 3d8efb6..d454b19 100644
--- a/main.c
+++ b/main.c
@@ -1,8 +1,9 @@
-
+#include "feature1.h"
 
 
 int main(void)
 {
-	return 0;
 	printf("Hello, World!");
+	feature1();
+	return 0;
 }