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Which of the following is not used as a file opening mode?

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+1 vote
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in C++ by (98.8k points)
Which of the following is not used as a file opening mode?

(a) ios::trunc

(b) ios::binary

(c) ios::in

(d) ios::ate

I have been asked this question in an online interview.

My doubt stems from File Handling topic in section Strings, Streams & Numerics in C++ of C++

1 Answer

+1 vote
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Best answer
Right option is (a) ios::trunc

The explanation is: ios::trunc is used to truncate a file if it exists. It is not a file opening mode.

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