file names 1

[JacksonGuy]

I am trying to come up with a way to make a random file name to output in a program. I am tried some different things using the ifstream and all of them require that you have a static filename (at least what I can get. I am trying to get something like:
f01.dat
f02.dat
........

does anyone have any ideas?

Thanks in advance

 

[shetlandbob]

your going to have to code the "random" names yourself, (f01.dat, f02.dat doesn't seem very random to me!)

What is your criteria for a random name? Is it so you dont overwrite other files?

Robert Cumming

http://www.consultantengineer.co.uk

 

[uolj]

You don't need a static filename with fstream. Use a stringstream to generate your filename by adding the base (like "f") with your random number (like "1"). Then get a string from that stringstream using str(). Then pass that string to the fstream constructor or open method using c_str() since fstream takes filenames as const char*.

By the way, you should probably use ofstream for random output files (why would you want a random input file?)

 

[JacksonGuy]

I guess random is not wuitr the right word. It's mainly so that the files don't overlap, I don't ever have to access the file again. It is suppose to make a program that writes a pattern of data to a harddrive much like a low-level format. This is just part of it that I was having problems with. I now have a lead as to how to go about doing it however I just need to play around with it to see if I can get it to work.

 

[JacksonGuy]

Thanks uolj, That is what I ended up doing, and it worked great..