import streamlit as st

st.title("🧮 Simple Calculator")

# Input fields
num1 = st.number_input("Enter first number", value=0.0)
num2 = st.number_input("Enter second number", value=0.0)

# Operation selection
operation = st.selectbox(
    "Select Operation", 
    [
        "Addition (+)", 
        "Subtraction (-)", 
        "Multiplication (×)", 
        "Division (÷)", 
        "Modulus (%)", 
        "Exponentiation (^)", 
        "Floor Division (//)", 
        "Average"
    ]
)

# Calculate result
if st.button("Calculate"):
    if operation == "Addition (+)":
        result = num1 + num2
        st.success(f"Result: {result}")
    elif operation == "Subtraction (-)":
        result = num1 - num2
        st.success(f"Result: {result}")
    elif operation == "Multiplication (×)":
        result = num1 * num2
        st.success(f"Result: {result}")
    elif operation == "Division (÷)":
        if num2 != 0:
            result = num1 / num2
            st.success(f"Result: {result}")
        else:
            st.error("Error: Cannot divide by zero")
    elif operation == "Modulus (%)":
        if num2 != 0:
            result = num1 % num2
            st.success(f"Result: {result}")
        else:
            st.error("Error: Cannot perform modulus with zero")
    elif operation == "Exponentiation (^)":
        result = num1 ** num2
        st.success(f"Result: {result}")
    elif operation == "Floor Division (//)":
        if num2 != 0:
            result = num1 // num2
            st.success(f"Result: {result}")
        else:
            st.error("Error: Cannot perform floor division by zero")
    elif operation == "Average":
        result = (num1 + num2) / 2
        st.success(f"Result: {result}")