diff --git a/tests/o.c b/tests/o.c
new file mode 100644
index 0000000..ff7ec1b
--- /dev/null
+++ b/tests/o.c
@@ -0,0 +1 @@
+#include ""
\ No newline at end of file
diff --git a/tests/o.h b/tests/o.h
new file mode 100644
index 0000000..073ed55
--- /dev/null
+++ b/tests/o.h
@@ -0,0 +1,3 @@
+void print(char *text)
+void println(char *text)
+
diff --git a/tests/work1.c b/tests/work1.c
index 2c145ae..f9b5cb2 100644
--- a/tests/work1.c
+++ b/tests/work1.c
@@ -104,4 +104,8 @@ void menu(int menu)
 void display_menu() {
     printf("\n");
     read_file("./../note/section1.txt");
+}
+
+void display_students() {
+    printf()
 }
\ No newline at end of file