Create app.py

app.py

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+import streamlit as st
+
+st.set_page_config(page_title="Simple Calculator", page_icon="🧮")
+
+st.title("🧮 Simple Calculator")
+st.write("This app performs basic arithmetic operations: +, −, ×, ÷")
+
+# Input numbers
+num1 = st.number_input("Enter the first number", format="%.2f")
+num2 = st.number_input("Enter the second number", format="%.2f")
+
+# Operation selection
+operation = st.selectbox("Choose operation", ("Addition (+)", "Subtraction (−)", "Multiplication (×)", "Division (÷)"))
+
+# 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: Division by zero is not allowed.")