C# Array - c# - c# tutorial - c# net
What is an array in C# ?
- In general, an arrays are collections of data.
- A scalar variable can hold the only one item at a time.
- Arrays can hold multiple items. These items are called elements of the array. Arrays store data of the same data type.
- Each element can be referred to by an index.
- Arrays are zero based. The index of the first element is zero. Arrays are reference types.
Syntax:
datatype[] arrayName;
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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# Array
C# Sample Code - C# Examples:
using System;
usingSystem.Collections.Generic;
usingSystem.Linq;
usingSystem.Text;
namespace Wikitechy_Array
{
classProgram
{
staticvoid Main(string[] args)
{
int[] array = newint[4];
array[0] = 1;
array[1] = 2;
array[2] = 3;
array[3] = 4;
for (inti = 0; i< 5; i++)
{
Console.WriteLine(array[i]);
}
Console.ReadLine();
}
}
}
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- int[] array = newint[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 statementarray[i].
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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.
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Array Vs ArrayList :
learn c# tutorial - array vs arraylist csharp in c# Example
learn csharp tutorial - c# collections - c# example programs
