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Questions and Answers
What is the purpose of the ios class in the stream class hierarchy?
What is the purpose of the ios class in the stream class hierarchy?
- It provides output formatting features.
- It is the topmost class in the stream hierarchy. (correct)
- It serves as a base for file handling.
- It handles only input operations.
Which operator is associated with the istream class for input operations?
Which operator is associated with the istream class for input operations?
- The write operator
- The extraction operator (>>) (correct)
- The insertion operator (<<)
- The put operator
What kind of data does the ostream class primarily handle?
What kind of data does the ostream class primarily handle?
- Memory buffers for temporary storage
- Input stream data from keyboards
- Binary data streams only
- Output stream data for display (correct)
Which function is NOT typically associated with the istream class?
Which function is NOT typically associated with the istream class?
What is the main advantage of declaring the ios class as a virtual base class?
What is the main advantage of declaring the ios class as a virtual base class?
Flashcards
Stream
Stream
A sequence of bytes representing a flow of data. Think of it as a continuous stream of information.
ios Class
ios Class
The base class for input and output stream operations. It acts as the foundation for handling data flow.
istream Class
istream Class
Used for reading data from a source, like a file or the keyboard.
ostream Class
ostream Class
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Extraction Operator (>>)
Extraction Operator (>>)
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Study Notes
Streams
- A stream is a sequence of bytes.
- Represents a flow of data.
- Examples include input from a keyboard and output to a monitor.
Stream Classes
-
iosis the base class for input/output stream classes (istream,ostream,streambuf). -
iosis a virtual base class for efficiency. -
istreamis the base class for input streams. -
ostreamis the base class for output streams. -
iostreamis derived from bothistreamandostream. -
istreamhandles input, providing functions likeget,getline,read,ignore, support for extracting data (e.g., using the extraction operator>>). -
ostreamhandles output, offering functions likewrite,put, and support for inserting data (using the insertion operator<<).
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