StackOverflow2013

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PO
primarykey
Id
20855911
data
AcceptedAnswerId
0
AnswerCount
0
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CommentCount
0
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CreationDate
2013-12-31T10:34:56.747
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0
LastActivityDate
2014-01-08T17:05:23.553
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2014-01-08T17:05:23.553
LastEditorUserId
2182508
OwnerUserId
2182508
ParentId
4861898
PostTypeId
2
Score
1
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0
LastEditorDisplayName
text
Body
<p>by below class you can write and read bit by bit </p> <pre><code>class bitChar{ public: unsigned char* c; int shift_count; string BITS; bitChar() { shift_count = 0; c = (unsigned char*)calloc(1, sizeof(char)); } string readByBits(ifstream& inf) { string s =""; char buffer[1]; while (inf.read (buffer, 1)) { s += getBits(*buffer); } return s; } void setBITS(string X) { BITS = X; } int insertBits(ofstream& outf) { int total = 0; while(BITS.length()) { if(BITS[0] == '1') *c |= 1; *c <<= 1; ++shift_count; ++total; BITS.erase(0, 1); if(shift_count == 7 ) { if(BITS.size()>0) { if(BITS[0] == '1') *c |= 1; ++total; BITS.erase(0, 1); } writeBits(outf); shift_count = 0; free(c); c = (unsigned char*)calloc(1, sizeof(char)); } } if(shift_count > 0) { *c <<= (7 - shift_count); writeBits(outf); free(c); c = (unsigned char*)calloc(1, sizeof(char)); } outf.close(); return total; } string getBits(unsigned char X) { stringstream itoa; for(unsigned s = 7; s > 0 ; s--) { itoa << ((X >> s) & 1); } itoa << (X&1) ; return itoa.str(); } void writeBits(ofstream& outf) { outf << *c; } ~bitChar() { if(c) free(c); } }; </code></pre> <p>for <code>example</code> </p> <pre><code>#include <iostream> #include <sstream> #include <fstream> #include <string> #include <stdlib.h> using namespace std; int main() { ofstream outf("Sample.dat"); ifstream inf("Sample.dat"); string enCoded = "101000001010101010"; //write to file cout << enCoded << endl ; //print 101000001010101010 bitChar bchar; bchar.setBITS(enCoded); bchar.insertBits(outf); //read from file string decoded =bchar.readByBits(inf); cout << decoded << endl ; //print 101000001010101010000000 return 0; } </code></pre>
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1. This table or related slice is empty.
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1. POOutputting bit data to binary file C++
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PostTypePostTypeId
1. PTAnswer
UserLastEditorUserId
1. USMahdi-bagvand
UserOwnerUserId
1. USMahdi-bagvand
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