How to generate a good random seed to pass to srand()?
Posted
by zr
on Stack Overflow
See other posts from Stack Overflow
or by zr
Published on 2010-02-02T14:26:57Z
Indexed on
2010/04/28
22:17 UTC
Read the original article
Hit count: 292
Hi,
I am writing a C++ program which needs to create a temporary file for its internal usage. I would like to allow concurrent executions of the program by running multiple proccesses, so the temporary file name needs to be randomized, that way each spawned process will generate a unique temporary file name for its own use. I am using rand() to generate random characters for part of the file name, so i need to initialize the random number generator's seed using srand(). What options are there for passing a good argument to srand() such that two processes will not be initialized with the same seed value? My code needs to work both on Windows and pn Linux
TIA.
© Stack Overflow or respective owner