C # arrays

An array is a data structure that contains several variables of the same type. An array is declared using a type:

Type[] Arrayname;

The following example creates a one-dimensional, multidimensional, and jagged array:

1 classTestarraysclass2 {3     Static voidMain ()4     {5         //Declare a single-dimensional array6         int[] Array1 =New int[5];7 8         //Declare and set array element values9         int[] Array2 =New int[] {1,3,5,7,9 };Ten  One         //Alternative Syntax A         int[] Array3 = {1,2,3,4,5,6 }; -  -         //Declare A and dimensional array the         int[,] multiDimensionalArray1 =New int[2,3]; -  -         //Declare and set array element values -         int[,] MultiDimensionalArray2 = {{1,2,3}, {4,5,6 } }; +  -         //Declare a jagged array +         int[] Jaggedarray =New int[6][]; A  at         //Set the values of the first array in the jagged array structure -jaggedarray[0] =New int[4] {1,2,3,4 }; -     } -}

Array overview

The array has the following properties:

• An array can be one-dimensional, multidimensional, or interleaved.

• The default value of a numeric array element is set to zero, and the default value of the reference element is set to NULL.

• A jagged array is an array of arrays, so its elements are reference types and are initialized to null.

• The index of the array is zero-based: The index of an array with n elements is from 0 to n-1.

• An array element can be any type, including an array type.

• An array type is a reference type derived from an abstract base type array. Because this type implements IEnumerable and IEnumerable, you can use foreach iterations for all arrays in C #.

C # arrays