Which of the following is a correct identifier in C++? Options VAR_1234 $var_name 7VARNAME 7var_name

The correct identifier in C++ from the given options is VAR_1234.

Here's why:

1. VAR_1234: This is a valid identifier in C++. Identifiers in C++ can start with a letter (either uppercase or lowercase) or an underscore, followed by any combination of letters, digits (0-9), or underscores. So, VAR_1234 is a valid identifier.

2. $var_name: This is not a valid identifier in C++. The dollar sign ($) is not a valid character for identifiers in C++.

3. 7VARNAME: This is not a valid identifier in C++. Identifiers in C++ cannot start with a digit.

4. 7var_name: This is also not a valid identifier in C++. Identifiers in C++ cannot start with a digit.