vtu27619 · October 25, 2025 05:06 · Oct 25, 2025
diff --git a/Task11.py b/Task11.py
@@ -0,0 +1,134 @@
+TASK 11A
+
+import tkinter as tk
+
+# Function to change font style
+
+def change_font():
+
+    label.config(font=("Arial", 18, "bold"))
+
+# Create main window
+
+root = tk.Tk()
+
+# Create label with desired text
+
+label = tk.Label(root, text="Hello, World!", font=("Helvetica", 14))
+
+# Add label to main window
+
+label.pack()
+
+# Create button to change font style
+
+button = tk.Button(root, text="Change Font", command=change_font)
+
+# Add button to main window
+
+button.pack()
+
+# Start the main loop
+
+root.mainloop()
+
+TASK 11B
+
+import tkinter as tk
+
+def add():
+
+    try:
+
+        result = float(num1_entry.get()) + float(num2_entry.get())
+
+        result_label.config(text=f"Result: {result}")
+
+    except ValueError:
+
+        result_label.config(text="Please enter valid numbers!")
+
+def subtract():
+
+    try:
+
+        result = float(num1_entry.get()) - float(num2_entry.get())
+
+        result_label.config(text=f"Result: {result}")
+
+    except ValueError:
+
+        result_label.config(text="Please enter valid numbers!")
+
+def multiply():
+
+    try:
+
+        result = float(num1_entry.get()) * float(num2_entry.get())
+
+        result_label.config(text=f"Result: {result}")
+
+    except ValueError:
+
+        result_label.config(text="Please enter valid numbers!")
+
+def divide():
+
+    try:
+
+        num1 = float(num1_entry.get())
+
+        num2 = float(num2_entry.get())
+
+        if num2 == 0:
+
+            result_label.config(text="Cannot divide by zero!")
+
+        else:
+
+            result = num1 / num2
+
+            result_label.config(text=f"Result: {result:.2f}")
+
+    except ValueError:
+
+        result_label.config(text="Please enter valid numbers!")
+
+# Create main window
+
+root = tk.Tk()
+
+root.title("Basic Calculator")
+
+# Input fields
+
+tk.Label(root, text="Enter first number:").pack()
+
+num1_entry = tk.Entry(root)
+
+num1_entry.pack()
+
+tk.Label(root, text="Enter second number:").pack()
+
+num2_entry = tk.Entry(root)
+
+num2_entry.pack()
+
+# Operation buttons
+
+tk.Button(root, text="Add (+)", bg="lightgreen", command=add).pack(pady=2)
+
+tk.Button(root, text="Subtract (-)", bg="lightblue", command=subtract).pack(pady=2)
+
+tk.Button(root, text="Multiply (×)", bg="orange", command=multiply).pack(pady=2)
+
+tk.Button(root, text="Divide (÷)", bg="pink", command=divide).pack(pady=2)
+
+# Result label
+
+result_label = tk.Label(root, text="", font=("Arial", 12, "bold"))
+
+result_label.pack(pady=10)
+
+root.mainloop()
+