C++ Standard Template Library in Practice - File I/O

The video tutorial covers the importance of file IO in software development, explaining how C++ uses stream operations for file handling. It introduces key classes like ifstream, ofstream, and fstream, and discusses various file modes such as readonly, write, append, and binary. A practical code example demonstrates file operations, including reading and writing data. The tutorial concludes with a brief overview of error handling and a preview of the next topic on string streams.

What is the primary purpose of using streams in C++ for file operations?

• To read and write data to files

• To execute system commands

• To handle user input from the console

• To manage memory allocation

Which mode should be used to open a file for writing only in C++?

• ios::out

• ios::in

• ios::app

• ios::binary

What happens when a file is opened in ios::trunc mode?

• The file is opened for reading

• The file is opened for appending

• The file's contents are deleted

• The file is opened in binary mode

In the provided example, what is the purpose of using ofstream?

• To delete a file

• To read data from a file

• To write data to a file

• To execute a file

How can you append data to an existing file in C++?

• Open the file in ios::app mode

• Open the file in ios::out mode

• Open the file in ios::binary mode

• Open the file in ios::in mode

What is a key consideration when reading data from a file into variables?

• Ensuring the file is in binary mode

• Matching the data types correctly

• Using the correct file path

• Closing the file before reading

What is the significance of error flags in file I/O operations?

• They indicate successful file operations

• They signal mismatches in data types

• They help in debugging syntax errors

• They are used to format the output