• C

f.seekg(0, ios::beg)

What is the role of  f.seekg(0, ios::beg);
Even if i remove from my read function it does not hurt.
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f.seekg sets the read/write position in a file.

f.seekg(0, ios::beg)  will set the read position to 0 bytes from the begining
of the file f, exactly at the start. however when you open a file in a non-append
mode (like for reading or writing), the  read position is always at the start. so you
can remove this line without affecting the behaviour of the function in your case.

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