Programming Forums > Application Development > C++

cairo · Jan 3rd, 2006, 9:03 AM

oppsss....
sorry , i forget to put in code tag

@InfoGeek, im not really get it ......
any website or detail explanation for me ?

thanks guys, i already solved it

cairo · Jan 3rd, 2006, 9:11 AM

Don't ever use time() to initialize srand() ?
have a look
http://csl.sublevel3.org/c++/

nnxion · Jan 3rd, 2006, 9:29 AM

Quote:

Originally Posted by cairo

Don't ever use time() to initialize srand() ?
have a look
http://csl.sublevel3.org/c++/

Did you read why?

Quote:

# Summary: Using time() to initialize srand() will set the same seed for all processes launched within the same second. For a lot of real-world appliations, and especially server programming, launching several processes withing the same second is quite common. Use another mechanism instead, such as gettimeofday(), which has microsecond precision.

In the future gettimeofday() might not even be fast enough, there are plenty of examples out there that will get you "truly random" numbers.

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Jan 3rd, 2006, 9:03 AM	#11
cairo Newbie Join Date: Dec 2005 Posts: 18 Rep Power: 0	oppsss.... sorry , i forget to put in code tag @InfoGeek, im not really get it ...... any website or detail explanation for me ? thanks guys, i already solved it

Jan 3rd, 2006, 9:11 AM	#12
cairo Newbie Join Date: Dec 2005 Posts: 18 Rep Power: 0	Don't ever use time() to initialize srand() ? have a look http://csl.sublevel3.org/c++/

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Programming Forums > Application Development > C++

tossing coin, logic problem ?