Activity

1. HARDIKSINGH07 commented on Jan 18, 2026

   

   HARDIKSINGH07

   on Jan 18, 2026

   More actions

   Basic Calculator Program

   print("Select operation:")
   print("1. Addition")
   print("2. Subtraction")
   print("3. Multiplication")
   print("4. Division")

   choice = input("Enter your choice (1/2/3/4): ")

   num1 = float(input("Enter first number: "))
   num2 = float(input("Enter second number: "))

   if choice == '1':
   print("Result =", num1 + num2)

   elif choice == '2':
   print("Result =", num1 - num2)

   elif choice == '3':
   print("Result =", num1 * num2)

   elif choice == '4':
   if num2 != 0:
   print("Result =", num1 / num2)
   else:
   print("Error: Cannot divide by zero!")

   else:
   print("Invalid choice")

   👍React with 👍1Reacted by JokoKusnandi
2. JokoKusnandi commented on Feb 24, 2026

   

   JokoKusnandi

   on Feb 24, 2026

   More actions

   Your program logic is correct, but the error occurs because of incorrect indentation.
   In Python, indentation is required after if, elif, and else statements.

   ❌ Problems in Your Code

   1. Missing indentation after if and elif
   2. Nested if inside division option also not indented
   3. Python will raise:

   IndentationError: expected an indented block
   

   print("Select operation:")
   print("1. Addition")
   print("2. Subtraction")
   print("3. Multiplication")
   print("4. Division")
   
   choice = input("Enter your choice (1/2/3/4): ")
   
   num1 = float(input("Enter first number: "))
   num2 = float(input("Enter second number: "))
   
   if choice == '1':
       print("Result =", num1 + num2)
   
   elif choice == '2':
       print("Result =", num1 - num2)
   
   elif choice == '3':
       print("Result =", num1 * num2)
   
   elif choice == '4':
       if num2 != 0:
           print("Result =", num1 / num2)
       else:
           print("Error: Cannot divide by zero!")
   
   else:
       print("Invalid choice")