Thread: ios::nocreate and the latest standard

ios::nocreate was removed in the latest standard, for some reason. Without it, how do I open a file (for reading) ONLY if it exists? I read in some other post here that the file shouldn't be opened if it doesn't exists, but mine still does.

Code:

ifstream ReadFile;

ReadFile.open(FileName, ios::in); //I want ot add ios::nocreate here too...
if(ReadFile.fail())
{
   //Never reached, even though the file doesn't exists
   return 0;
}

Your implementation is noncompliant; a conforming compiler will enter your error handler. Upgrade your compiler, I guess.

Assuming "notareal.fil" does not exist, the following should print "Failure." on any conforming compiler:

Code:

#include <iostream>
#include <fstream>

int main(){

	std::ifstream ReadFile;

	ReadFile.open("c:\\notareal.fil", std::ios::in);
	if(ReadFile.fail())
		std::cout << "Failure." << std::endl;
	else std::cout << "Success." << std::endl;
}

I'm using Visual C/C++ v6.?
I thought that would be new enough...

> I'm using Visual C/C++ v6.?
v6 is especially poor at complying to any C++ standards
The latest .net c++ compiler is much better

I think from memory it was that bad and that one was fixed in a service pack. Have you got your v6c installation up to date magos?