Update app.py

app.py

@@ -1,27 +1,47 @@
 import streamlit as st
 
 def main():
-    st.title("Simple Calculator")
-    st.write("Perform basic arithmetic operations")
+    st.title("Advanced Calculator")
+    st.write("Perform arithmetic operations with three numbers")
 
     # Input fields
     num1 = st.number_input("Enter the first number", value=0.0, step=1.0)
     num2 = st.number_input("Enter the second number", value=0.0, step=1.0)
-    operation = st.selectbox("Select an operation", ("Addition", "Subtraction", "Multiplication", "Division"))
+    num3 = st.number_input("Enter the third number", value=0.0, step=1.0)
+    operation = st.selectbox("Select an operation", (
+        "Addition", 
+        "Subtraction", 
+        "Multiplication", 
+        "Division", 
+        "Modulus", 
+        "Exponentiation", 
+        "Average"
+    ))
 
     # Perform calculation
     result = None
     if operation == "Addition":
-        result = num1 + num2
+        result = num1 + num2 + num3
     elif operation == "Subtraction":
-        result = num1 - num2
+        result = num1 - num2 - num3
     elif operation == "Multiplication":
-        result = num1 * num2
+        result = num1 * num2 * num3
     elif operation == "Division":
-        if num2 != 0:
-            result = num1 / num2
+        if num2 != 0 and num3 != 0:
+            result = num1 / num2 / num3
         else:
             st.error("Division by zero is not allowed!")
+    elif operation == "Modulus":
+        if num2 != 0 and num3 != 0:
+            result = num1 % num2 % num3
+        else:
+            st.error("Division by zero is not allowed!")
+    elif operation == "Exponentiation":
+        base = st.number_input("Enter the base number for exponentiation", value=0.0, step=1.0)
+        exponent = st.number_input("Enter the exponent", value=1.0, step=1.0)
+        result = base ** exponent
+    elif operation == "Average":
+        result = (num1 + num2 + num3) / 3
 
     # Display result
     if result is not None: