Which data type would be appropriate for storing a character in C++?

The appropriate data type for storing a character in C++ is the char type. This data type is specifically designed to hold single characters, such as 'a', '1', or '#'. In C++, the char data type typically occupies one byte of memory and can store character values represented through the ASCII (American Standard Code for Information Interchange) or Unicode character sets.

Using char allows programmers to manipulate individual characters effectively. For example, if you want to store a character to represent a grade (like 'A' or 'B'), using char is ideal because it precisely matches the requirement of storing a single character without any additional overhead.

Other data types, such as int, float, or string, serve different purposes: int is used for integers, float for floating-point numbers, and string for sequences of characters. Thus, they would not be suitable for the specific task of storing a single character.