diff --git a/contact.c b/contact-manage-sys/contact.c
similarity index 100%
rename from contact.c
rename to contact-manage-sys/contact.c
diff --git a/contact.h b/contact-manage-sys/contact.h
similarity index 100%
rename from contact.h
rename to contact-manage-sys/contact.h
diff --git a/contact_management_system.exe b/contact-manage-sys/contact_management_system.exe
similarity index 100%
rename from contact_management_system.exe
rename to contact-manage-sys/contact_management_system.exe
diff --git a/main.c b/contact-manage-sys/main.c
similarity index 100%
rename from main.c
rename to contact-manage-sys/main.c
diff --git a/utils.c b/contact-manage-sys/utils.c
similarity index 100%
rename from utils.c
rename to contact-manage-sys/utils.c
diff --git a/utils.h b/contact-manage-sys/utils.h
similarity index 100%
rename from utils.h
rename to contact-manage-sys/utils.h