2 Dimensional Array in C Programming Language
By rajkishor09
We know how to work with an array (1D array) having one dimension. In C language it is possible to have more than one dimension in an array. In this tutorial we are going to learn how we can use two dimensional arrays (2D arrays) to store values. Because it is a 2D array so its structure will be different from one dimension array (1D array). The 2D array is also known as Matrix or Table, it is an array of array. See the 2D array image, in that image each row is an array.
Declaration of 2D array:
Syntax: data_type array_name[row_size][column_size];
Example: int arr[3][3];
So the above example declares a 2D array of integer type. This integer array has been named arr and it can hold up to 9 elements (3 rows x 3 columns).
2D array image
Memory Map of 2D Array
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Code for assigning & displaying 2D Array
#include<stdio.h>
#include<conio.h>
void main()
{
int i, j;
int arr[3][3]={
{12, 45, 63},
{89, 34, 73},
{19, 76, 49}
};
clrscr();
printf(":::2D Array Elements:::\n\n");
for(i=0;i<3;i++)
{
for(j=0;j<3;j++)
{
printf("%d\t",arr[i][j]);
}
printf("\n");
}
getch();
}
Displaying 2D array using for loop.
So in the above example we have declared a 2D array named arr which can hold 3x3 elements. We have also initialized that array with values, because we told the compiler that this array will contain 3 rows (0 to 2) so we divided elements accordingly. Elements for column have been differentiated by a comma (,). When compiler finds comma in array elements then it assumes comma as beginning of next element value. We can also define the same array in other ways, like.
int arr[3][3]={12, 45, 63, 89, 34, 73, 19, 76, 49}; or,
int arr[ ][3]={12, 45, 63, 89, 34, 73, 19, 76, 49};
But this kind of declaration is not acceptable in C language programming.
int arr[2][ ]={12, 45, 63, 89, 34, 73, 19, 76, 49}; or,
int arr[ ][ ]={12, 45, 63, 89, 34, 73, 19, 76, 49};
To display 2D array elements we have to just point out which element value we want to display. In our example we have a arr[3][3], so the array element reference will be from arr[0][0] to arr[2][2]. We can print display any element from this range. But in our example I have used for loop for my convenience, otherwise I had to write 9 printf statements to display all elements of array. So for loop i handles row of 2D array and for loop j handles column. I have formatted the output display of array so that we can see the elements in tabular form.
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i want merging two dimensional arrays in c language
Thank you friend for written data type.
yesterday i was completely confuse when i was writing 2d array prog but now now my concept is totally clear about it
is there any difference between these two assignment?
int arr[ ][3]={12, 45, 63, 89, 34, 73, 19, 76, 49};
and
int arr[3 ][]={12, 45, 63, 89, 34, 73, 19, 76, 49};
compiler shows second one is wrong..y?
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Write a program that creates a two-dimensional array with 10 rows and 2 columns. The first column should be filled with 10 random numbers between 0 and 100. The second column should contain the squared value of the element found in column 1. Using the show ( ) method of the MessageBox class, display a table. Please someone help me out on this program?????
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write program of maximum and minimum using twodemension array using c
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bucles 2 years ago
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