C# Random - c# - c# tutorial - c# net
What is Random Number in C# ?
- In C#, the Random class defined in the .NET Framework class library provides functionality to generate random numbers.
- This method is used to generate random string.
- The Random class constructors have two overloaded forms. It takes either no value or it takes a seed value. The Random class has three public methods
- Next,
- NextBytes, and
- NextDouble.
-
Next:
The Next method is used to returns a random number. -
NextBytes:
NextBytes method returns an array of bytes filled with random numbers. -
NextDouble:
The next double method returns a random number between 0.0 and 1.0.
Syntax:
datatype[] arrayName;
Syntax Explanation:
-
datatype:
Datatype is used to specify the type of elements in the array. And [ ] specifies the rank of the array. The rank specifies the size of the array. -
arrayName:
ArrayName specifies the name of the array.
C# Sample Code - C# Examples:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace Wikitechy_Array
{
class Program
{
static void Main(string[] args)
{
int[] array = new int[4];
array[0] = 1;
array[1] = 2;
array[2] = 3;
array[3] = 4;
for (int i = 0; i < 5; i++)
{
Console.WriteLine(array[i]);
}
Console.ReadLine();
}
}
}
Code Explanation:
- int[] array = new int[4]; We declare and initialize a numerical array. And we declare an array which contains 4 elements. All elements are integers.
- We initialize the array with some data. This is assignment initialization. The indexes are in the square brackets. Array [0] is going to be the first element of the array. Array [1] is going to be the second element of the array, Array [2] is going to be the third element of the array, Array [3] is going to be the fourth element of the array.
- Here for (int i = 0; i < 5; i++) specifies integer i = 0, which means the expression, (I < 5), is true. Therefore, the statement is executed, and i gets incremented by 1 and becomes 4.
- Here we can declare and initialize an array in one statement array[i].
Sample C# examples - Output :
- Here in this output the 1,2,3,4 will be printed until it reaches the less than "5" array elements.