diff --git a/CalculatorTutorial/CalculatorTutorial.cpp b/CalculatorTutorial/CalculatorTutorial.cpp
index 9e0ba05..b436b2b 100644
--- a/CalculatorTutorial/CalculatorTutorial.cpp
+++ b/CalculatorTutorial/CalculatorTutorial.cpp
@@ -6,6 +6,7 @@
 
 using namespace std;
 
+//ソースコードに変更
 int main()
 {
     double x = 0.0;