Worksheet #24090602 Functions in Python: Types, User-Defined Functions, Arguments, Parameters, and Scope.

Multiple Choice Questions (MCQs)

1. Which of the following is a built-in function in Python?
   • a) print()
   • b) my_function()
   • c) calculate()
   • d) run_code()
2. What is a user-defined function in Python?
   • a) A function available in the Python standard library
   • b) A function defined by the user using the def keyword
   • c) A function that cannot be modified by the user
   • d) A function that Python defines automatically
3. Which of the following correctly defines a function in Python?
   • a) function myFunc() {}
   • b) def myFunc():
   • c) myFunc def():
   • d) def myFunc:
4. What is the correct syntax for a function with default parameters?
   • a) def func(x=10, y):
   • b) def func(x, y=20):
   • c) def func(x=10, y=20):
   • d) def func(y=20, x):
5. What does a function return if there is no return statement?
   • a) None
   • b) 0
   • c) The last value computed
   • d) An error message
6. What is the local scope of a variable?
   • a) The variable is accessible throughout the entire program
   • b) The variable is accessible only inside the function where it is defined
   • c) The variable is stored permanently
   • d) The variable is defined outside any function
7. What is the correct way to call a function named myFunc with arguments 10 and 20?
   • a) myFunc(10, 20)
   • b) myFunc x=10, y=20
   • c) myFunc(10; 20)
   • d) myFunc(x: 10, y: 20)
8. Which of the following is true about positional parameters in Python functions?
   • a) They can only be integers
   • b) They must be provided in the order the function defines them
   • c) They are always optional
   • d) They can be placed in any order when calling a function
   • What will the following code print?
     def testFunc(x, y=5):

          return x + y


              print(testFunc(10))
   • a) 5
   • b) 15
   • c) 10
   • d) Error
9. Which keyword is used to specify a global variable inside a function?
   • a) global
   • b) nonlocal
   • c) local
   • d) var

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Programming Questions

1. Write a Python program to create a user-defined function greet() that takes a name as a parameter and prints “Hello, [name]!”
2. Define a function add_numbers() that takes two numbers as positional arguments and returns their sum.
3. Create a function find_max() that accepts three numbers as parameters and returns the largest number among them.
4. Write a program that defines a function with default parameters and prints different results when called with and without providing arguments.
5. Define a function calculate_area() that takes length and width as parameters and returns the area of a rectangle.
6. Create a program that demonstrates the use of a global variable inside a function.
7. Write a Python program to demonstrate the flow of execution inside nested functions (functions within functions).
8. Write a function factorial(n) that returns the factorial of a given number n. Demonstrate calling this function with an argument.
9. Define a function that takes a list of numbers and returns the sum of the numbers. Demonstrate the use of both positional and keyword arguments when calling the function.
10. Write a Python program to demonstrate the difference between local and global scope by defining and printing variables inside and outside a function.