istream::read issue

[santoshbalmatti]

Hi All,

I have written a small piece of code which reads a file and prints it on the console. I compiled the file both in windows and linux and found that in windows the istream::read encounters the EOF character before then that of Linux.

Here is the code:

// load a file into memory
#include <iostream>
#include <fstream>
using namespace std;

int main(int argc, char*argv[])
{
int length;
char * buffer;

ifstream is("CT-MONO2-12-lomb-an2.dcm");

// get length of file:
is.seekg (0, ios::end);
length = is.tellg();
is.seekg (0, ios::beg);

cout <<"File Length: " << length << endl;
buffer = (char*) malloc(length);
for(int j =0; j < length ;j++)
{
is.read(buffer,1);
int test = is.peek();
cout << i << " : " << test << endl;
if(is.peek() == EOF){
cout << "Encountered end of file: at position"<< i<<endl;
}
if(failStatus)
break;
i++;
}
cout << "Bytes Read: " << i << endl;
is.close();
free(buffer);
return 0;
}

FOR WINDOWS: Encountered the end at 12501
FOR LINUX: Encountered the end at 525517

Please let me regarding this behaviour of WINDOWS when the file size is 525518.

Thanks
Santosh S.B

[kbw]

In Windows, you need to open the file in in binary mode (std::fstream is("CT-MONO2-12-lomb-an2.dcm", std::ios::binary);).