File Size with fstream

[gankokann]

May I know if there is a direct way of getting the file size of a binary file (number of characters), using fstream?

[igbrus]

use fstream::rdbuf()->seekoff( 0, ios_base::end )

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[Emi]

Hi,

See this#include <iostream>
#include <fstream>

using namespace std;

long GetLenFile(char *szFileName)
{
fstream file(szFileName, ios::in | ios::binary);

if (!file)
{
TRACE("error\n");
return -1;
}
else
{
file.seekg(0, ios_base::end);
streampos nPos = file.tellg();
TRACE("len file = %d\n", (long)nPos);
return (long)nPos;
}
}
// call
long nLen = GetLenFile("readme.txt");

Tell me if that help.

Regards,
Emi.

[gankokann]

Sorry, it doesn't help because of the error
"seekoff' : cannot access protected member declared in class 'std::basic_filebuf<char,struct std::char_traits<char> >'"

[gankokann]

It works! Cheers mate.

[Emi]

You are welcome.

Regards,
Emi.

[jluisrey]

Use


m_file.seekg(0, ios_base::end);
long nEnd = m_file.tellg();

[igbrus]

Yes, other answers are more helpful

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