When is the eof flag raised (set/on) in an input stream object? (There is only o
ID: 3861083 • Letter: W
Question
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.Explanation / Answer
Answer:
Q 11)
The eof flag is raised only when the eof character is encountered in the buffer during an input operation.
The fail flag is raised only when the result of a read operation fails.
For Eg, if there is an attempt to read an integer from an input sequence containing only white spaces.
Q 12)
Stream formatting Methods:
iostream - It provides the basic information required for all stream I/O operations such as cin, cout etc.
fstream - It provides file processing operations.
Formatting manipulators:
iomanip - It performs formatted I/O with parameterized stream manipulation. Eg. showpoint(), showpos() etc
Q 13)
Answer is TRUE
Usually, we close the file after the usage. But if we don't close the file it doesn't give any error.
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