How does C s random number generator work

Question

I was just wondering how the random number generator in C  works  I was also curious how I could make a program that generates random WHOLE INTEGER numbers from 1-100

User · Accepted Answer

I was just wondering how the random number generator in C# works.

That's implementation-specific, but the wikipedia entry for pseudo-random number generators should give you some ideas.

I was also curious how I could make a program that generates random WHOLE INTEGER numbers from 1-100.

You can use Random.Next(int, int):

Random rng = new Random();
for (int i = 0; i < 10; i++)
{
    Console.WriteLine(rng.Next(1, 101));
}

Note that the upper bound is exclusive - which is why I've used 101 here.

You should also be aware of some of the "gotchas" associated with Random - in particular, you should not create a new instance every time you want to generate a random number, as otherwise if you generate lots of random numbers in a short space of time, you'll see a lot of repeats. See my article on this topic for more details.

User · Answer

You can use Random Next int maxValue       Return    A 32-bit signed integer greater than or equal to zero  and less than   maxValue  that is  the range of return values ordinarily includes zero   but not maxValue  However  if maxValue equals zero  maxValue is   returned    var r   new Random       print random integer  gt   0 and   lt  100 Console WriteLine r Next 100      For this case however you could use Random Next int minValue  int maxValue   like this      print random integer  gt   1 and  lt  101 Console WriteLine r Next 1  101       or perhaps  if you have this specific case  Console WriteLine r Next 100    1

User · Answer

I ve been searching the internet for RNG for a while now  Everything I saw was either TOO complex or was just not what I was looking for  After reading a few articles I was able to come up with this simple code       Random rnd   new Random DateTime Now Millisecond     int   b   new int 10    5  8  1  7  3  2  9  0  4  6      textBox1 Text   Convert ToString b rnd Next 10        Simple explanation     create a 1 dimensional integer array  full up the array with unordered numbers  use the rnd Next to get the position of the number that will be picked    This works well   To obtain a random number less than 100 use      Random rnd   new Random DateTime Now Millisecond     int   b   new int 10    5  8  1  7  3  2  9  0  4  6      int   d   new int 10    9  4  7  2  8  0  5  1  3  4      textBox1 Text   Convert ToString b rnd Next 10      Convert ToString d rnd Next 10         and so on for 3  4  5  and 6     digit random numbers    Hope this assists someone positively

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