Detecting reason for failure to open an ofstream when fail() is true

Question

Seems like this should be simple, but I don\'t find it in a net search.

I have an ofstream which is open(), and fail() is now true. I\'d li

Answer 1

we need not use std::fstream, we use boost::iostream

#include 
#include 

void main()
{
   namespace io = boost::iostreams;

   //step1. open a file, and check error.
   int handle = fileno(stdin); //I'm lazy,so...

   //step2. create stardard conformance streem
   io::stream s( io::file_descriptor_source(handle) );

   //step3. use good facilities as you will
   char buff[32];
   s.getline( buff, 32);

   int i=0;
   s >> i;

   s.read(buff,32);

}