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Which of the following system call is used for opening or creating a file?

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Which of the following system call is used for opening or creating a file?

(a) read

(b) write

(c) open

(d) close

The question was posed to me in an interview.

I need to ask this question from System Calls Basics topic in portion System Programming I – Files of Unix

1 Answer

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Best answer
The correct answer is (c) open

Best explanation: To read or write to a file, we first need to open it. For this purpose, open system call is used. Open has two forms ; the first forms assumes that the file already exists and the second form creates the file if it doesn’t.

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