Python functions (Built-in and User defind functions)

Which keyword is used for defining afunction in python?

• define

• fun

• def

• function

Answer explanation

In Python, the keyword 'def' is used to define a function. The other options, 'define', 'fun', and 'function', are not valid keywords for this purpose.

The function pow(x,y) is evaluated as:

• x*y

• x**y

• x%y

• None is true

Answer explanation

The function pow(x,y) computes x raised to the power of y, which is represented as x**y in Python. Therefore, the correct answer is x**y.

If return statement is not used inside the function, the function will return:

• None

• 0

• Null

• Arbitary value

Answer explanation

In Python, if a function does not have a return statement, it implicitly returns None. Therefore, the correct answer is None.

What is a variable defined outside a function referred to as?

• local variable

• global variable

• static variable

• automatic variable

Answer explanation

A variable defined outside a function is accessible throughout the program, making it a global variable. In contrast, local variables are defined within a function and are only accessible there.

When defining a function, the definition must occur before it is called.

• True

• False

Answer explanation

True. In programming, a function must be defined before it can be called. This ensures that the interpreter knows the function's behavior and can execute it correctly when invoked.

The values being passed through a function-call statement are called,

• arguments

• alternatives

• actual argument

• actual parameter

Answer explanation

The values passed in a function-call statement are referred to as 'arguments'. This term encompasses all values provided to the function, making 'arguments' the correct choice over alternatives like 'actual argument' or 'actual parameter'.

The values received in the function definition header are called ,

• parameter

• alternatives

• formal parameter

• formal argument

Answer explanation

In function definitions, the values specified in the header are referred to as 'parameters'. They act as placeholders for the actual values (arguments) that will be passed when the function is called.

What is the displayed output?

• nothing

• 5

• 6

• an error message

Answer explanation

The output is 'nothing' because the operation performed does not produce any visible result or value. Therefore, the correct choice is 'nothing'.

What is the output?

• nothing

• 5

• 6

• an error message

Answer explanation

The output is 5 because the operation performed in the question results in that value. The other options do not match the expected result.

Select the advantages of functions

• Modular programming

• Improving clarity of the code

• Code re-usability

• All the above

Answer explanation

Functions offer several advantages: they promote modular programming by breaking code into manageable parts, improve clarity by making code easier to read, and enhance code reusability, allowing for efficient development. Thus, the correct answer is 'All the above'.