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C | File Handling | Question 4

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  • Difficulty Level : Basic
  • Last Updated : 28 Jun, 2021
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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

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