Thread: checking for a files existance

Whats the best way to check and see if a file exists?

Try and open it. As long as you use the standard fstream header trying to open a file using an ifstream object that doesn't exist will fail.

ifile ifstream;

ifile.open("filename.ext");

When i do that it creates the file, weather it exists or not.

And the ifstream:pen() function dosent return a value, so how do i know if it failed?

I was thinking i might could use the eof member somehow?


I tried

if(ifile.eof) createfile();

Are you sure you're using the standard header files (the ones without the h extension)? Try this -

Code:

#include <iostream>
#include <fstream>
using namespace std;

int main()
{

	ifstream in;
	in.open("doesnotexist.txt");

	if(!in.is_open())
		cout << "File doesn't exist"<<endl;



	return 0;
}