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c++istream

How to do if I want stream_iterator not to ignore whitespaces


After binding cin to istream_iterator and reading its I don't have whitespaces:

iter = istream_iterator<char>(std::cin);
istream_iterator<char> iend;
for(int i=0;i<maxBufferSize;++i)
{
    if(iter==iend)
      return STREAMBUFFER_EOF;
    c = *iter;
    buffer += c;
    iter++;
}
if(iter==iend)
  return STREAMBUFFER_EOF;
return STREAMBUFFER_OK;

Is there way to configure it to not ignore whitespaces?


Solution

  • If your goal is to read unformatted character data from the stream, you could use std::istreambuf_iterator instead, without needing to change any format flags of the stream.

    std::istreambuf_iterator<char> iter(std::cin), iend;
    for(int i=0;i<maxBufferSize;++i)
    ...