magix wrote:
Hi,
I got following to savefile into Output.txt, but how can I specify it to be
in specific folder/directory (not at the same directory as the executables?
Currently, it will generate the output.txt under the same directory as the
executables.
std::stringstre am stream;
stream << "Output.txt " << std::flush;
std::ofstream SaveFile(stream .str().c_str()) ;
Example:
C:\Programming\ test input.txt
it will generate output.txt in the same directory as where the executable
"test" located
If I want output.txt to be generated in C:\Programming\ Output\ or at other
directory i.e C:\Output\, how to achieve that ?
Please help. Thanks.
Regards.
Remember that '\' implies a switch and one of those switches is used to
inject a backslash (ie:'\\').
You can also try '/' instead which is not parsed as a switch. You'll
have to test that on your specific platform to find out if it works at
all.
In order to help yourself with an issue like this, a little error
checking is very handy (if not a requirement). And one typical way that
you might consider doing this is a std::exception.
Try the following on your platform and change the directory to whatever
you need.
#include <iostream>
#include <ostream>
#include <string>
#include <fstream>
#include <stdexcept>
class FileException : public std::exception
{
std::string s_e;
public:
FileException( std::string s ) : s_e( s ) { }
~FileException( ) throw() { }
const char* what() const throw() { return s_e.c_str(); }
};
int main()
{
std::string s_file("output. txt");
std::string s_target("/test/");
s_target += s_file;
try
{
std::ofstream ofs( s_target.c_str( ) );
if ( !ofs.is_open() )
{
throw FileException(" could not open file " + s_target);
}
ofs << s_target << std::endl;
}
catch ( const std::exception& e )
{
std::cout << "Error: " << e.what() << std::endl;
}
return 0;
}
write-protect the file:
Error: could not open file /test/output.txt
hmm...
Now code a templated File class that can read() and write() whatever
you need.
File< std::string file; // a std::deque of strings?
file.read("data .txt"); // load the container with the file's contents
