diff --git a/README.md b/README.md
new file mode 100644
index 00000000..8710d6d4
--- /dev/null
+++ b/README.md
@@ -0,0 +1 @@
+[![Build C++](https://github.com/Kevinn-Xiong/MyFirstExample/actions/workflows/build.yml/badge.svg)](https://github.com/Kevinn-Xiong/MyFirstExample/actions/workflows/build.yml)
diff --git a/main.cpp b/main.cpp
index 5411e7a3..3e4107b4 100644
--- a/main.cpp
+++ b/main.cpp
@@ -16,8 +16,12 @@ int main()
     cout << "Addition: " << x + y << endl;
     cout << "Subtraction: " << x - y << endl;
     cout << "Multiplication: " << x * y << endl;
+    if(y == 0) {
+      cout << "Dividing by zero is not a number." << endl;
+    } else {
     cout << "Division: " << x / y << endl;
     cout << "Remainder: " << x % y << endl;
+    }
     cout << "Square Root: " << sqrt(x) << endl;
     cout << "Square: " << pow(x, y) << endl;