Random lowercase letter. In a C# program, a random lowercase letter is needed. It must be between "a" and "z" inclusive. We can get this letter with a special method.
Method info. We generate random characters by providing inclusive and exclusive bounds to the Random variable. We can then convert the numbers returned to characters.
using System;
static class RandomLetter
{
static Random _random = new Random();
public static char GetLetter()
{
// This method returns a random lowercase letter.
// ... Between 'a' and 'z' inclusive.
int num = _random.Next(0, 26); // Zero to 25
char let = (char)('a' + num);
return let;
}
}
class Program
{
static void Main()
{
// Get random lowercase letters.
Console.WriteLine(RandomLetter.GetLetter());
Console.WriteLine(RandomLetter.GetLetter());
Console.WriteLine(RandomLetter.GetLetter());
Console.WriteLine(RandomLetter.GetLetter());
Console.WriteLine(RandomLetter.GetLetter());
}
}i
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Random fields. When using Random, it is often useful to store the Random variable itself as a static field. Random implements a stream of randomness.
A summary. We examined a program that implements a random letter generation routine. The method shown returns a random letter between "a" and "z" in char representation.
Final notes. The method can be called sequentially—it is a random stream. The static modifier is used here to simplify the program layout and reduce instantiations.
Dot Net Perls is a collection of tested code examples. Pages are continually updated to stay current, with code correctness a top priority.
Sam Allen is passionate about computer languages. In the past, his work has been recommended by Apple and Microsoft and he has studied computers at a selective university in the United States.
This page was last updated on Sep 14, 2022 (grammar).
