Create app.py

app.py

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+import streamlit as st
+
+st.set_page_config(page_title="Simple Calculator", layout="centered")
+
+st.title("🧮 Simple Calculator")
+
+# Inputs
+num1 = st.number_input("Enter first number", format="%.2f")
+num2 = st.number_input("Enter second number", format="%.2f")
+
+operation = st.selectbox("Choose operation", ["Add", "Subtract", "Multiply", "Divide"])
+
+# Perform Calculation
+if st.button("Calculate"):
+    if operation == "Add":
+        result = num1 + num2
+        st.success(f"Result: {num1} + {num2} = {result}")
+    elif operation == "Subtract":
+        result = num1 - num2
+        st.success(f"Result: {num1} - {num2} = {result}")
+    elif operation == "Multiply":
+        result = num1 * num2
+        st.success(f"Result: {num1} × {num2} = {result}")
+    elif operation == "Divide":
+        if num2 != 0:
+            result = num1 / num2
+            st.success(f"Result: {num1} ÷ {num2} = {result}")
+        else:
+            st.error("Error: Division by zero is not allowed.")