Understanding C# Char.ToLower Method

What does the char.ToLower method do in C#?

Options:

a. Returns the character unchanged

b. Converts the character to its lowercase equivalent

Answer:

The correct answer is: b. Converts the character to its lowercase equivalent

In C#, the char.ToLower method is used to convert a character to its lowercase equivalent. If an uppercase letter is passed as the parameter to this method, it will indeed return the lowercase version of that letter.

This behavior is consistent with the purpose of the ToLower method, which is to perform a case conversion operation. For example, if you pass the uppercase letter 'A' to char.ToLower, it will return the lowercase letter 'a'. Similarly, if you pass 'B', it will return 'b', and so on. This behavior holds true for all uppercase letters in the English alphabet.

Therefore, contrary to the statement, the char.ToLower method does change the character and returns its lowercase equivalent when an uppercase letter is passed as input.