Update app.py

app.py

@@ -0,0 +1,31 @@
+import streamlit as st
+
+st.set_page_config(page_title="Simple Calculator", layout="centered")
+
+st.title("🧮 Simple Calculator")
+
+# Input numbers
+num1 = st.number_input("Enter first number", format="%f")
+num2 = st.number_input("Enter second number", format="%f")
+
+# Operation selection
+operation = st.selectbox("Select operation", ["Add", "Subtract", "Multiply", "Divide"])
+
+# Perform calculation
+result = None
+if st.button("Calculate"):
+    if operation == "Add":
+        result = num1 + num2
+    elif operation == "Subtract":
+        result = num1 - num2
+    elif operation == "Multiply":
+        result = num1 * num2
+    elif operation == "Divide":
+        if num2 != 0:
+            result = num1 / num2
+        else:
+            st.error("Division by zero is not allowed.")
+
+# Show result
+if result is not None:
+    st.success(f"Result: {result}")