app.py

import streamlit as st

# Title
st.title("🧮 Simple Calculator App")

# Input numbers
num1 = st.number_input("Enter First Number", value=0.0)
num2 = st.number_input("Enter Second Number", value=0.0)

# Select operator
operator = st.selectbox("Select Operation", ["+", "-", "*", "/"])

# Calculate button
if st.button("Calculate"):
    if operator == "+":
        result = num1 + num2
    elif operator == "-":
        result = num1 - num2
    elif operator == "*":
        result = num1 * num2
    elif operator == "/":
        if num2 != 0:
            result = num1 / num2
        else:
            result = "❌ Cannot divide by zero"

    st.success(f"Result: {result}")