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C | File Handling | Question 4

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In fopen(), the open mode “wx” is sometimes preferred “w” because. 1) Use of wx is more efficient. 2) If w is used, old contents of file are erased and a new empty file is created. When wx is used, fopen() returns NULL if file already exists. (A) Only 1 (B) Only 2 (C) Both 1 and 2 (D) Neither 1 nor 2

Answer: (B)

Explanation: See https://www.geeksforgeeks.org/fopen-for-an-existing-file-in-write-mode/

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Last Updated : 28 Jun, 2021
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