Search code examples
c++fstreamofstream

outputting binary data is missing some bytes

I have the following code

fin.close();
open = inName + ".xxx";
fin.open(open.c_str(),ios::binary);
fin>>noskipws;

while (fin>>_4byte[0])
{
    fout<<_4byte[0];
}

I also have fout open in binary mode too. However, this code was working perfectly, but suddenly after adding a loop before it it stopped outputting all the data, it is missing somewhere around 33~55 bytes. I tried removing every other fin.open and fin.close to keep this one, but I keep on getting the same issue which is the output file is missing some data.

_4byte is an unsigned char array.

Solution

  • So I solved it, the issue was that I only had to add fin.close() after the while loop. I'm not sure why it happened. Can someone explain the reason?

    Edit: Okay that was not the issue. After this code I had a cin, it actually stops writing when it reaches the cin if it hadn't done writing yet.