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What is the function of FILE *tmpfile(void)?

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What is the function of FILE *tmpfile(void)?

(a) creates a temporary file of mode “wb+”

(b) creates a temporary file of mode “wb”

(c) creates a temporary file of mode ” w”

(d) creates a temporary file of mode “w+”

I had been asked this question in an interview.

My question is taken from File Operations topic in portion Input and Output in C of C

1 Answer

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Correct option is (a) creates a temporary file of mode “wb+”

Easiest explanation - A temporary file is created by tmpfile()  function of mode   “wb+” that will be automatically removed when closed or when the program terminates normally.

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