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Full Discussion: writing binary file (C++)
Top Forums Programming writing binary file (C++) Post 302529745 by lamachejo on Friday 10th of June 2011 09:52:57 AM
Old 06-10-2011
writing binary file (C++)
Hi guys, I am writing a vector into a binary file (linux of course), but somehow there seems to be something wrong with this code, because the output file size in binary is BIGGER than doing it with the same vector but insead of binary, in plain text, and I as far as I understand, binary files size it's lesser than saving it as a text.

Here's the code

Code:
	
int aux=0;
	    ofstream fo(file, ios::out | ios::binary);
	    fo.write("MP-PER-B \n",10*sizeof(char));
	    fo.write((const char*) (&numero),sizeof(int));
	    for(int i=0; i<numero; i++){
			aux=vector[i];
			fo.write ((const char *) (&aux),sizeof(int));
		}	
	  fo.close();

Also, being unable to read it from linux command line makes things difficult (I can't see if it wrote the numbers since I do not know any command that would read the file made ).
 

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LEARN ABOUT DEBIAN

mmseg

MMSEG(1)						User Contributed Perl Documentation						  MMSEG(1)

NAME

       mmseg - maximum matching segment Chinese text.

SYNOPSIS

       mmseg -d dict_file [option]... [corpus_file]...

DESCRIPTION

       mmseg is a tool for segmenting Chinese text into words using maximum matching algorithm. mmseg segments corpus_file, or standard input if
       no filename is specified, and write the segmented result to standard output.

OPTIONS

       -d dict_file
	   Use dict_file as lexicon. A default lexicon can be found at /usr/share/sunpinyin-slm/dict.utf8.

       -f,--format (text|bin)
	   Output Format, can be 'text' or 'bin'. default 'bin'.  Normally, in text mode, word text are output, while in binary mode, binary short
	   integer of the word-ids are written to stdout.

       -s, --stok STOK_ID
	   Sentence token id. Default 10.  It will be written to output in binary mode after every sentence.

       -i, --show-id
	   Show Id info. Under text output format mode, attach id after known words.  If under binary mode, print id(s) in text.

       -a, --ambiguious-id AMBI-ID
	   Ambiguious means ABC => A BC or AB C. If specified (AMBI-ID != 0), The sequence ABC will not be segmented, in binary mode, the AMBI-ID
	   is written out; in text mode, "<ambi>ABC</ambi>" will be output. Default is 0.

NOTES

       Under binary mode, consecutive id of 0 are merged into one 0.  Under text mode, no space are inserted between unknown-words.

AUTHOR

       Originally written by Phill.Zhang <phill.zhang@sun.com>.  Currently maintained by Kov.Chai <tchaikov@gmail.com>.

SEE ALSO

       slmseg(1), ids2ngram (1).

perl v5.14.2							    2012-06-09								  MMSEG(1)
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