Update app.py

app.py

@@ -1,25 +1,89 @@
 import streamlit as st
+import math
 
-st.title("Simple Calculator")
-
-num1 = st.number_input("Enter first number:", format="%f")
-num2 = st.number_input("Enter second number:", format="%f")
-
-operation = st.selectbox("Choose operation", ["Addition (+)", "Subtraction (-)", "Multiplication (*)", "Division (/)"])
-
-if st.button("Calculate"):
-    if operation == "Addition (+)":
-        result = num1 + num2
-        st.success(f"The result is: {result}")
-    elif operation == "Subtraction (-)":
-        result = num1 - num2
-        st.success(f"The result is: {result}")
-    elif operation == "Multiplication (*)":
-        result = num1 * num2
-        st.success(f"The result is: {result}")
-    elif operation == "Division (/)":
-        if num2 != 0:
-            result = num1 / num2
-            st.success(f"The result is: {result}")
-        else:
-            st.error("Cannot divide by zero!")
+st.title("🧮 Advanced Calculator")
+
+tab1, tab2, tab3 = st.tabs(["Basic Operations", "Scientific Functions", "Trigonometry"])
+
+with tab1:
+    st.header("Basic Operations")
+    num1 = st.number_input("Enter first number", key="basic_num1")
+    num2 = st.number_input("Enter second number", key="basic_num2")
+    operation = st.selectbox("Choose operation", ["Add (+)", "Subtract (-)", "Multiply (*)", "Divide (/)"], key="basic_op")
+
+    if st.button("Calculate", key="basic_calc"):
+        if operation == "Add (+)":
+            result = num1 + num2
+        elif operation == "Subtract (-)":
+            result = num1 - num2
+        elif operation == "Multiply (*)":
+            result = num1 * num2
+        elif operation == "Divide (/)":
+            if num2 != 0:
+                result = num1 / num2
+            else:
+                st.error("Cannot divide by zero.")
+                result = None
+        if result is not None:
+            st.success(f"Result: {result}")
+
+with tab2:
+    st.header("Scientific Functions")
+    num = st.number_input("Enter a number", key="sci_num")
+    function = st.selectbox("Choose function", ["Power (x^y)", "Square Root", "Log10", "Natural Log", "Factorial"], key="sci_func")
+
+    if function == "Power (x^y)":
+        exponent = st.number_input("Enter exponent", key="sci_exponent")
+
+    if st.button("Calculate", key="sci_calc"):
+        try:
+            if function == "Power (x^y)":
+                result = math.pow(num, exponent)
+            elif function == "Square Root":
+                if num < 0:
+                    st.error("Square root of negative number is not supported.")
+                    result = None
+                else:
+                    result = math.sqrt(num)
+            elif function == "Log10":
+                if num <= 0:
+                    st.error("Logarithm undefined for zero or negative numbers.")
+                    result = None
+                else:
+                    result = math.log10(num)
+            elif function == "Natural Log":
+                if num <= 0:
+                    st.error("Natural log undefined for zero or negative numbers.")
+                    result = None
+                else:
+                    result = math.log(num)
+            elif function == "Factorial":
+                if num < 0 or int(num) != num:
+                    st.error("Factorial only defined for non-negative integers.")
+                    result = None
+                else:
+                    result = math.factorial(int(num))
+            if result is not None:
+                st.success(f"Result: {result}")
+        except Exception as e:
+            st.error(f"Error: {e}")
+
+with tab3:
+    st.header("Trigonometric Functions")
+    angle = st.number_input("Enter angle in degrees", key="trig_angle")
+    trig_func = st.selectbox("Choose function", ["sin", "cos", "tan"], key="trig_func")
+
+    if st.button("Calculate", key="trig_calc"):
+        rad = math.radians(angle)
+        if trig_func == "sin":
+            result = math.sin(rad)
+        elif trig_func == "cos":
+            result = math.cos(rad)
+        elif trig_func == "tan":
+            if math.isclose(math.cos(rad), 0, abs_tol=1e-10):
+                st.error("tan is undefined for this angle.")
+                result = None
+            else:
+                result = math.tan(rad)
+        if result is not None:
+            st.success(f"{trig_func}({angle}°) = {result}")