Which action writes data from memory to a file?

Which action writes data from memory to a file?

• A. Read file
• B. Write file
• C. Open file
• D. Close file

Answer: (B)

File I/O involves opening, reading, writing, and closing a file. The action that moves data from memory into the file’s storage is writing. When you write, the data your program holds in memory is sent to the file, updating or saving it. Opening sets up access, closing ends the access (and may flush any buffered data), and reading brings data from the file into memory. So the operation that writes data from memory to the file is the write action.

File I/O involves opening, reading, writing, and closing a file. The action that moves data from memory into the file’s storage is writing. When you write, the data your program holds in memory is sent to the file, updating or saving it. Opening sets up access, closing ends the access (and may flush any buffered data), and reading brings data from the file into memory. So the operation that writes data from memory to the file is the write action.