Answer:
e. tryorfail
Explanation:
Following are reserved keywords in C++:
- this - A reference to the current object
- friend - Used to designate a friend class which has special access privileges for members of the class
- class - A keyword used for defining a C++ class
- for - Looping construct in C++
tryorfail is not a valid keyword in C++. The relevant keyword is try for exception handling.
