Interface

#include <codecogs/io/binary/file_length_cpp.h>

int

fileLengthCpp (std::fstream * file) Calculate the length of C++ - style files

---

Function Documentation

The C++ - version of Will Bateman's binary/file_length

Returns the length of a file in bytes. Useful when you need to dynamically allocate memory to hold the contents of a file you intend to read. This function was designed to replicated the similarly named filelength function that comes with some distributions of C/C++, particularly on DOS platforms. There doesn't appear to be an equivalent in Unix.

References:

fileLength

Example:

#include <iostream>
#include <fstream>
#include <codecogs/io/binary/file_length_cpp.h>
 
using namespace std;
 
int main(int argc, char** argv)
{
        if(argc < 2) return (-1);
        
        fstream a(argv[1]);
        cout <<"The file "<<argv[1]
             <<" is "<<fileLengthCpp(&a)
             <<"bytes long."<<endl;
        return (0);
}

Parameters:

file	is a pointer referring to a C++ fstream object.

Returns:

fileLengthCpp returns the length of the input file in bytes. On failure it returns -1.

Authors:

Robert Schwede

Source Code:

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