Question

The __________ function returns the uppercase equivalent of its character argument.

Short answer

Question: Explain a function that returns the uppercase equivalent of a character input. Answer: The function, called to_uppercase, takes a character input and checks if it is a lowercase letter. If it is, it converts the character to its uppercase equivalent by subtracting 32 from its ASCII code and returns the uppercase character. If the input character isn't a lowercase letter, the function returns the original character. For example, using this function with 'c' as input would return 'C'.

Step-by-step solution

Understand the problem

We need to create a function that takes a single character as input and returns its uppercase equivalent. If the character is already in uppercase or not a letter, the function should return the original character.

Plan the solution

We will implement a function called to_uppercase that: 1. Takes a character as input. 2. Checks if the character is a lowercase letter. 3. If it's a lowercase letter, return the uppercase equivalent. 4. Otherwise, return the original character as the output.

Implement the to_uppercase function

Here's one way to implement the to_uppercase function in Python: ```python def to_uppercase(char): if 'a' <= char <= 'z': # Check if the character is a lowercase letter return chr(ord(char) - 32) # Convert to uppercase by subtracting 32 from its ASCII code else: return char # Return the original character if not a lowercase letter ```

Test the function with an example

Now we can test the function with an example. Let's say we want to find the uppercase equivalent of the character 'c'. Here's how we can use our function: ```python input_char = 'c' output_char = to_uppercase(input_char) print(output_char) # This will print 'C' ``` As expected, the to_uppercase function returns the uppercase equivalent of 'c', which is 'C'.