File handling is an essential aspect of many applications in C++. With its capabilities, we can perform operations like reading from and writing to files, making persistent storage possible. Whether you’re storing configuration, saving user data, or even logging, understanding C++’s file handling is paramount. Let’s dive into this quiz and test your knowledge on C++ file handling!
1. Which header file is necessary to perform file operations in C++?
Answer:
Explanation:
The
2. Which class is used to read from a file in C++?
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Explanation:
ifstream stands for input file stream and is used for reading operations.
3. How do you open a file named “data.txt” in write mode?
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Explanation:
The ofstream class with the ios::out mode is used to open a file for writing.
4. Which of the following is used to determine the end-of-file?
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Explanation:
The eof() function returns true when the end of the file is reached.
5. How can you check if a file failed to open?
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Explanation:
The fail() function can be used to check if an operation on a file failed, including file opening.
6. Which mode will allow you to append data to the end of an existing file?
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Explanation:
The ios::app mode allows data to be appended to the end of an existing file.
7. What is the purpose of the close() function?
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Explanation:
The close() function is used to close a file that has been opened.
8. Which function can be used to read a single character from a file?
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Explanation:
The get() function is used to read a single character from a file.
9. If you want to move the file pointer to the beginning of the file, which function will you use?
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Explanation:
The seekg() function is used to move the file pointer, and file.seekg(0); will move it to the beginning of the file.
10. How do you open a file in both read and write modes?
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Explanation:
To open a file in both read and write modes, you use ios::in combined with ios::out using the bitwise OR operator.
File handling is a powerful feature in C++, allowing developers to interact with files for various purposes. This quiz was designed to give you a quick insight into the basics. Keep practicing and delve deeper into the nuances of file operations for a more comprehensive understanding. Happy coding!