Multidimensional Array.

  • Multi-dimensional is declared as same as One-dimensional arrays, thus required separate  square brackets is require. two-dimensional require two brackets ,three dimensional required three brackets and so on.

Two-Dimensional Array

  • You can Assume a Two -dimensional array as a table which contains rows and columns
  • Declaration of Two-dimensional array require two brackets
  • In first bracket ,you have to specified number of rows and In second Bracket you have to specified number of columns.
  • As one-dimensional array, Element of two-dimensional array has a unique index number.

Declaration of 2-dimensional array

Syntax:

data_type  array_name[no of rows ][no of columns];

Let's declare some multi-dimensional arrays.

#include<stdio.h>

void main()
{
    int arr[3][4];  //integer type of Two-dimensional array having 3 rows and 4 columns.

    
    
    float arr1[3][3];    //float type of Two-dimensional array having 3 rows and 3 columns.
}

Initialization of two dimensional array

  • For initializing two dimensional array ,you can assume each row as an individual array.
  • Two dimensional array are nested arrays.
  • In one array,there are lots of other arrays.

lets Initialize some two-dimensional array.

#include<stdio.h>

void main()
{     //integer type of Two-dimensional array having 3 rows and 4 columns.
    int arr[3][4] = {{98,65,5,87},   // first row. 
                     {32,42,65,64},      //second row.
                     {31,74,47,14}};   //third row.

                //initializing the two dimensional array 'arr'.
}

Element and their indexes.



Accessing the elements of 2d array.

  • As we know each element of an array has a unique index number, with the help of that we will access the elements.

let access some element of array. 

#include<stdio.h>

void main()
{     //integer type of multi-dimensional array having 3 rows and 4 columns.
    int row1_col1,row2_col2,row0_col0;
    int arr[3][4] = {{98,65,5,87},   //First row
                     {32,42,65,64},  //second row
                     {31,74,47,14}};  //third row

                //initializing the two dimensional array 'arr'

            row0_col0 = arr[0][0];
            row1_col1 = arr[1][1];
            row2_col2 = arr[2][2];

                  //printing element at index arr[0][0]
        printf("\nElement at  0_row and 0_col is %d",row0_col0);
                  //printing element at index arr[1][1]     
          printf("\nElement at  1st_row and 1st_col is %d",row1_col1);

                    //printing element at index arr[2][2]
            printf("\nElement at  2nd_row and 2nd_col is %d",row2_col2);
}

Output:

Element at 0th_row and 0th_col is 98
Element at 1st_row and 1st_col is 42
Element at 2nd_row and 2nd_col is 74




Further Concepts:

Practice Programs

  • Programs regarding Arrays
  • Programs Regarding 2d arrays
  • Programs regarding matrix
  • And lot more


Further Topics:


People Also Searched: