diff --git a/Header_files/.app.i.swp b/Header_files/.app.i.swp
deleted file mode 100644
index e548ad0..0000000
Binary files a/Header_files/.app.i.swp and /dev/null differ
diff --git a/Header_files/A.h b/Header_files/A.h
index affdc2c..3439812 100644
--- a/Header_files/A.h
+++ b/Header_files/A.h
@@ -6,7 +6,7 @@
  *    Description:  
  *
  *        Version:  1.0
- *        Created:  02/02/24 10:15:59 PM IST
+ *        Created:  03/02/24 10:48:50 AM IST
  *       Revision:  none
  *       Compiler:  gcc
  *
@@ -16,6 +16,8 @@
  * =====================================================================================
  */
 
-
-#define max(a,b) ( a > b ? a : b )
-int sum(int a,int b);
+#ifndef __A__
+#define __A__
+#define max(a,b) (a > b? a : b)
+int sum(int a,int b)
+#endif
diff --git a/Header_files/B.h b/Header_files/B.h
index 9f609db..62d407e 100644
--- a/Header_files/B.h
+++ b/Header_files/B.h
@@ -6,7 +6,7 @@
  *    Description:  
  *
  *        Version:  1.0
- *        Created:  02/02/24 10:18:06 PM IST
+ *        Created:  03/02/24 10:49:56 AM IST
  *       Revision:  none
  *       Compiler:  gcc
  *
@@ -16,6 +16,9 @@
  * =====================================================================================
  */
 
+#ifndef __B__
+#define __B__
 #include "A.h"
-#define min(a,b) ( a > b ? b : a )
-int multiply ( int a , int b );
+#define min(a,b) (a > b? b:a )
+int multiply(int a,int b)
+#endif