Which of the following functions need a filename?

A fopen
B fclose
C fread
D none of these
Answer & Explanation
Option: [A]

The fopen function need a filename. It opens a file and points either begining or end of the file.

fp = fopen ("file.txt", "r");

here r stands for file access mode for reading a file only. The other modes are w, a, r+, w+, a+

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