2-D Array

Two Dimensional Array in C

• The two dimensional array in C language is represented in the form of rows and columns, also known as matrix. It is also known as array of arrays or list of arrays.
• The two dimensional, three dimensional or other dimensional arrays are also known as multidimensional arrays.

2-D Array

Declaration of two dimensional Array in C

• We can declare an array in the c language in the following way.

data_type array_name[size1][size2];  

• A simple example to declare two dimensional array is given below.

int twod[4][3];  

Here, 4 is the row number and 3 is the column number.

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Initialization of 2D Array in C

• A way to initialize the two dimensional array at the time of declaration is given below.

int arr[4][3]={{1,2,3},{2,3,4},{3,4,5},{4,5,6}};  

Two dimensional array example in C

#include <stdio.h>    

#include <conio.h>    

void main(){    

int i=0,j=0;  

int arr[4][3]={{1,2,3},{2,3,4},{3,4,5},{4,5,6}};  

clrscr();    

  

//traversing 2D array  

for(i=0;i<4;i++){  

 for(j=0;j<3;j++){  

   printf("arr[%d] [%d] = %d \n",i,j,arr[i][j]);  

 }//end of j  

}//end of i  

  

getch();    

}

Output

arr[0][0] = 1

arr[0][1] = 2

arr[1][0] = 2

arr[0][2] = 3

arr[1][1] = 3

arr[2][1] = 4

arr[1][2] = 4

arr[2][0] = 3

arr[2][2] = 5

arr[3][2] = 6

arr[3][0] = 4

arr[3][1] = 5