Read ASCII and binary from file in c++

Question

How can i manage to open a file and read some fixed (lets assume n) lines of ASCII code, and after that switch to reading BINARY from the same file starting with the n+1 line in C++?

If you've opened the file with fopen in text mode, you can re-open it in binary mode with freopen. If that's what you mean. — Jonathan Potter
– Jonathan Potter, Commented Aug 12, 2014 at 5:07
and will it keep reading from n+1 line, not reopen the file? I was looking for a c++ solution via fstream, but i guess that's fine too. — Radu Vlad
– Radu Vlad, Commented Aug 12, 2014 at 5:12

perreal · Accepted Answer · 2014-08-12 05:37:54Z

1

You can't change the mode without reopening because the fstream uses system calls to open files which in turn do not allow a mode change. You can use tellg / seekg to save and later restore the reading position, respectively.

answered Aug 12, 2014 at 5:37

perreal

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Radu Vlad Over a year ago

I guess I'll mark your answer as accepted since I was thinking the same, but I waited for another possibility. Thanks

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