Originally Posted by ArkM

It's a WRONG attempt to eat the rest of input line on cin (for example, you get the 1st word and you want to skip other stuff).
if cin is attached to a file (not to console), you may get cin.eof condition before '\n' so you never get '\n' in these two lines of code.
Right solution (one of);

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C++ Syntax (Toggle Plain Text)

while (cin && cin.get() != '\n')
    continue;
// or simple
while (cin && cin.get() != '\n')
    ;

while (cin && cin.get() != '\n') continue; // or simple while (cin && cin.get() != '\n') ;