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c++ Programming Glossary: srandWhat's the Right Way to use the rand() Function in C++? http://stackoverflow.com/questions/1117292/whats-the-right-way-to-use-the-rand-function-in-c to try seeding by including this first in randint . srand 5355 Which just generated the same number over and over I feel.. I thought I'd be clever and implement the seed like this. srand rand This basically just did the same as the program did in.. this question Option 2 isn't difficult here you go srand time NULL you'll need to include stdlib.h for srand and time.h..
How do you generate a random double uniformly distributed between 0 and 1 from C++? http://stackoverflow.com/questions/1340729/how-do-you-generate-a-random-double-uniformly-distributed-between-0-and-1-from-c
Floating point vs integer calculations on modern hardware http://stackoverflow.com/questions/2550281/floating-point-vs-integer-calculations-on-modern-hardware #include time.h int main int argc char argv int accum 0 srand time NULL for unsigned int i 0 i 100000000 i accum rand 365.. #include time.h int main int argc char argv float accum 0 srand time NULL for unsigned int i 0 i 100000000 i accum float rand..
Recommended way to initialize srand? http://stackoverflow.com/questions/322938/recommended-way-to-initialize-srand
Is there a replacement for unistd.h for Windows (Visual C)? http://stackoverflow.com/questions/341817/is-there-a-replacement-for-unistd-h-for-windows-visual-c it I get complaints about misssing prototypes for 'srandom' 'random' and 'getopt'. I know I can replace the random functions.. family #include direct.h for _getcwd and _chdir #define srandom srand #define random rand Values for the second argument to.. #include direct.h for _getcwd and _chdir #define srandom srand #define random rand Values for the second argument to access...
How do I scale down numbers from rand()? http://stackoverflow.com/questions/4195958/how-do-i-scale-down-numbers-from-rand code outputs a random number each second int main srand time NULL Seeds number generator with execution time. while..
Using stdlib's rand() from multiple threads http://stackoverflow.com/questions/6161322/using-stdlibs-rand-from-multiple-threads number several times. We tried to do this by putting srand time 0 at the start of the function but it seems that they all.. that they all get the same number. Do we need to call srand time 0 only once per program i.e at the start of main for example.. c c multithreading random share improve this question srand seeds the random number generator. You should only have to call..
rand function returns same values when called within a single function c++ http://stackoverflow.com/questions/6729214/rand-function-returns-same-values-when-called-within-a-single-function-c PullOne string pick string choices 3 BAR 7 cherries std srand time 0 pick choices std rand 3 return pick from my main function.. c faq share improve this question You shouldn't call srand before each call to rand . Call it once somewhere at the start..
C++ random float number generation http://stackoverflow.com/questions/686353/c-random-float-number-generation you must first seed the random number generator by calling srand . This should be done once during your program's run not once.. every time you call rand . This is often done like this srand static_cast unsigned time 0 In order to call rand or srand you.. srand static_cast unsigned time 0 In order to call rand or srand you must #include cstdlib . In order to call time you must #include..
What is the best way to generate random numbers in C++? http://stackoverflow.com/questions/9471604/what-is-the-best-way-to-generate-random-numbers-in-c double RAND_MAX 1.0 max min 1 min and don't forget to call srand before you use it int occurences 8 0 srand time 0 for int i.. forget to call srand before you use it int occurences 8 0 srand time 0 for int i 0 i 100000 i occurences irand 1 7 for int i..
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