Arrays

An array is a series of elements of the same type placed in contiguous memory locations. Elements in the array are accessed by using index positions.

Suppose if you want to calculate sum of 9 integers, you have to define 9 variables like below

    int var1, var2, var3, var4, var5, var6, var7, var8, var9;

    var1 = 5;

    var2 = -10;

    var3 = 7;

    var4 = 8

    var5 = 11;

    var6 = 12;

    var7 = 14;

    var8 = 21;

    var9 = 0;

By using new keyword we can declare like below

    int var[] = new int[9];

    var[0] = 5;

    var[1] = -10;

    var[2] = 7;

    var[3] = 8

    var[4] = 11;

    var[5] = 12;

    var[6] = 14;

    var[7] = 21;

    var[8] = 0;

As you see, Array indexes starts from 0. var[0] represents 5, var[2] represents 7 and so on.

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