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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 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
Generate a value between 0. 0 and 1. 0 using rand () - Stack Overflow The OP's reasoning for trying it was wrong, but had this been necessary, the UB could've been avoided by adding 1 0 instead of 1, which would coerce RAND_MAX to double type and so avoid the integer overflow
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
rand () Function to give a 32-bit random unsigned int You can fix the overlap problem by reducing the rand result to 15 bits before applying | Or, if you know the rand implementation being used returns only 15-bit numbers (integers from 0 to 32,767), you can ignore that; (unsigned int) rand() << 17 | rand() << 2 | rand() >> 13 is okay, presuming unsigned int is 32 bits and rand returns a value less than 2^29 (so that rand() << 2 does not overflow)