Added the GCD and LCM function in calculator.

Calculator/tkinter calculator.py

@@ -1,4 +1,5 @@
 import parser
+import tkinter.messagebox as msgbox  # Added for displaying GCD and LCM results
 from tkinter import *
 root=Tk()
 root.title("Calculator")
@@ -7,6 +8,12 @@
 display.grid(row=1,columnspan=6,sticky=W+E)
 
 #get the user input and place it in the textfield
+# Input fields for two numbers
+num1_entry = Entry(root)
+num1_entry.grid(row=6, column=0)
+num2_entry = Entry(root)
+num2_entry.grid(row=6, column=2)
+
 
 i=0
 def get_variables(num):
@@ -44,6 +51,27 @@ def calculate():
         clear_all()
         display.insert(0,"error")
 
+# Function to find the GCD of two numbers using Euclidean algorithm
+def find_gcd(a, b):
+    while b:
+        a, b = b, a % b
+    return a
+
+# Function to find the LCM of two numbers
+def find_lcm(a, b):
+    return (a * b) // find_gcd(a, b)
+
+# Calculate and display GCD and LCM
+def calculate_gcd_lcm():
+    try:
+        num1 = int(num1_entry.get())
+        num2 = int(num2_entry.get())
+        gcd = find_gcd(num1, num2)
+        lcm = find_lcm(num1, num2)
+        msgbox.showinfo("Result", f"The GCD of {num1} and {num2} is: {gcd}\n"
+                                   f"The LCM of {num1} and {num2} is: {lcm}")
+    except ValueError:
+        msgbox.showerror("Error", "Please enter valid numbers for GCD and LCM calculation.")
 
 
 
@@ -78,8 +106,8 @@ def calculate():
 Button(root,text="x!").grid(row=4,column=5)
 Button(root,text="^2",command=lambda :get_operation('**2')).grid(row=5,column=5)
 
-
-
+# Button to calculate GCD and LCM
+Button(root, text="Calculate GCD/LCM", command=calculate_gcd_lcm).grid(row=6, column=4)