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c++ - How does modulus and rand () work? - Stack Overflow A second lesson is that this shows another way in which <random> is easier to use than rand() and manually computing your own distributions The built-in uniform_int_distribution allows you to directly state the desired, inclusive range
How to generate a random int in C? - Stack Overflow Many implementations of rand() cycle through a short list of numbers, and the low bits have shorter cycles The way that some programs call rand() is awful, and calculating a good seed to pass to srand() is hard The best way to generate random numbers in C is to use a third-party library like OpenSSL For example,
c - How does srand relate to rand function? - Stack Overflow printf("%d\n", rand() % 50); Where is the connection between rand and srand? What I mean or expect is I assume rand () will get some parameter from srand () so it knows to generate different numbers each time I assume it would look something like rand (srand (time (null)); It's like initializing a variable without using it to me srand is being initialized, but I don't see it being used Does
c++ - Random float number generation - Stack Overflow C++11 gives you a lot of new options with random The canonical paper on this topic would be N3551, Random Number Generation in C++11 To see why using rand() can be problematic see the rand () Considered Harmful presentation material by Stephan T Lavavej given during the GoingNative 2013 event The slides are in the comments but here is a direct link I also cover boost as well as using rand
c - Rand Implementation - Stack Overflow rand and srand are usually implemented as a simple LCG, you can easily write your own (it's few lines of code) without looking for the sources of rand and srand Notice that, if you need random numbers for "serious" purposes (e g cryptography), there are much better RNGs than LCG By the way, the C standard itself includes a sample implementation of rand and srand:
How does rand() work? Does it have certain tendencies? Is there . . . The actual implementation of the random number generator is left unspecified, so the actual behavior is specific to the implementation The important thing to remember is that rand does not return random numbers; it returns pseudo-random numbers, and the values it returns are determined by the seed value and the number of times rand has been