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When is the eof flag raised (set/on) in an input stream object? (There is only one condition that causes this...) What about the fail flag? When is it raised (set/on) in an input stream object? (There are at least three - 3 - conditions that can cause this.) Stream formatting methods can be used by including the ____ library in your program. The formatting manipulators, however, require inclusion of the ____ library header. TRUE/FALSE If you forget to close a file stream, nothing could possibly go wrong. You are given a class Class which has the array member arr (which is of base type bool) whose used entries are counted by member count (which is of type size.t). Show (pseudo)code for operator[] to be used to access the elements of arr from a Class object