Question

This is the code I have, but the file is a little smaller and doesn’t execute:

int WriteFileContentsToNewFile(string inFilename, string outFilename)
{
    ifstream infile(inFilename.c_str(), ios::binary);
    ofstream outfile(outFilename.c_str(), ios::binary);

    string line;
    // Initial read
    infile >> line;
    outfile << line;
    // Read the rest
    while( infile )
    { 
        infile >> line;
        outfile << line;
    }

    infile.close();
    outfile.close();

    return 0;
}

What am I doing wrong? Is there a better way to read in the binary of an executable file and immediately write it out to another name? Any code examples?

I need to do it without a system copy in order to simulate writing to disk.

Answer 1

One way is to use the stream inserter for a streambuf:

int WriteFileContentsToNewFile(string inFilename, string outFilename)
{
    ifstream infile(inFilename.c_str(), ios::binary);
    ofstream outfile(outFilename.c_str(), ios::binary);

    outfile << infile.rdbuf();
}