diff --git a/c-basic/main.c b/c-basic/main.c
index dc4ec2f..fc257e1 100644
--- a/c-basic/main.c
+++ b/c-basic/main.c
@@ -3,14 +3,14 @@
 #ifndef HEX_READ_SCANF_H
 #define HEX_READ_SCANF_H
 
-extern void hello();
+extern void hex_scan();
 
 #endif // HEX_READ_SCANF_H
 
 int main()
 {
 
-  hello();
+  hex_scan();
 
   return 0;
 }
diff --git a/main b/main
new file mode 100755
index 0000000..59dab49
Binary files /dev/null and b/main differ