diff --git a/Calculator_Update/main.cpp b/Calculator_Update/main.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..253b4a3c0c970b2519ec377f8d0c6bc86287c398
--- /dev/null
+++ b/Calculator_Update/main.cpp
@@ -0,0 +1,12 @@
+#include "calculator.h"
+
+#include <QApplication>
+
+int main(int argc, char *argv[])
+{
+    QApplication a(argc, argv);
+    Calculator w;
+    w.show();
+    return a.exec();
+}
+//all default