Published on: 12th Nov 2010 | Last Updated on: 24th Nov 2011
Two Dimensional Array :
The array which is used to represent and store data in a tabular form is called as 'two dimensional array.' Such type of array specially used to represent data in a matrix form.
The following syntax is used to represent two dimensional array.
Syntax:
<data-type> <array_nm> [row_subscript][column-subscript];
Example:
int a[3][3];
In above example, a is an array of type integer which has storage size of 3 * 3 matrix. The total size would be 3 * 3 * 2 = 18 bytes.
It is also called as 'multidimensional array.'
* Memory Allocation :
Fig : Memory allocation for two dimensional array
Program :
/* Program to demonstrate two dimensional array.
Creation Date : 10 Nov 2010 02:01:09 PM
Author :www.technoexam.com [Technowell, Sangli] */
#include <stdio.h> #include <conio.h> void main() { int a[3][3], i, j; clrscr(); printf("\n\t Enter matrix of 3*3 : "); for(i=0; i<3; i++) { for(j=0; j<3; j++) { scanf("%d",&a[i][j]); //read 3*3 array } } printf("\n\t Matrix is : \n"); for(i=0; i<3; i++) { for(j=0; j<3; j++) { printf("\t %d",a[i][j]); //print 3*3 array } printf("\n"); } getch(); }
Output :
Enter matrix of 3*3 : 3 4 5 6 7 2 1 2 3 Matrix is : 3 4 5 6 7 2 1 2 3_
Limitations of two dimensional array :
- We cannot delete any element from an array.
- If we dont know that how many elements have to be stored in a memory in advance, then there will be memory wastage if large array size is specified.
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