Identifiers should at least give a hint to the human reader of the __ of the identifier in the context of the problem being solved.

Identifiers should at least give a hint to the human reader of the ________________ of the identifier in the context of the problem being solved. 

Answer: Meaning

Explanation: Any identifier in a program that represents a quantity in a problem should be named in the program with the real life name for that quantity, or at least the should hint at the real life thing it represents.

In C++, a variable that has been defined but not initialized may not be use as an ______. (l-value or r-value).

In C++, a variable that has been defined but not initialized may not be use as an ______. (l-value or r-value).

Answer: r-value

Explanation: The value of an uninitialized variable may not be fetched. C++ does not enforce this. If an uninitialized variable’s value is fetched you get whatever value was left in the memory location by a previous user. Note that the value is garbage in the dictionary sense, It is not a random value.