Question

Def addNum(num1 = 10):print(num1 + num1)

Choose the correct output of calling the above function using the following code:
a. addNum()
b. 0
c. 10
d. 20
c. An Error

Answer 1

The function addNum() with the default argument of 10, when called as addNum(), will output 20, as it prints the sum of the default argument with itself.

Step-by-step explanation:

The student's question is about determining the output of a Python function addNum() when it is called. The function definition provided is def addNum(num1 = 10):print(num1 + num1). This function takes one argument with a default value of 10. When the function is called with no arguments as addNum(), the default value of the argument num1 will be used, which is 10. The function then prints the sum of the argument num1 with itself, which results in 20 because 10 + 10 equals 20.

Hence, when calling the function using the code addNum(), the correct output would be d. 20.

The concept of default argument values in functions is a fundamental programming concept that allows a function to be called with fewer arguments than it is defined to accept.