In this article, you will learn and get code on three dimensional array in C programming.
To find the size of three dimensional array say arr[i][j][k]. The formula is:
size = i*j*k
For example, if a given array is arr[3][4][2]. Then its size will be:
size = 3*4*2
= 24
That is, it can hold upto 24 elements.
An array of three dimension say arr[3][4][2] indicates, 3 two-dimensional array of size 4*2. That is, the two dimensional array has 4 rows and 2 columns. Its initialization goes like:
arr[3][4][2] = {
{ {1, 2}, {3, 4}, {5, 6}, {7, 8} },
{ {8, 7}, {6, 5}, {4, 3}, {2, 1} },
{ {1, 3}, {5, 7}, {9, 7}, {5, 3} }
};
As you can see, there are three two dimensional array with 4 rows and 2 columns each. Now let's move on to the program.
Three dimensional (3D) array uses three for loops in programming. Therefore, if you want to intialize dynamically or to print its elements on output, you have to use three for loops. Like the program given below uses the same to print all the elements of three-dimensional array on output:
// C Program for Three Dimensional (3D) Array
// ----codescracker.com----
#include<stdio.h>
#include<conio.h>
int main()
{
int i, j, k;
int arr[3][4][2] = {
{ {2, 4}, {7, 8}, {3, 4}, {5, 6} },
{ {7, 6}, {3, 4}, {5, 3}, {2, 3} },
{ {8, 9}, {7, 2}, {3, 4}, {5, 1} }
};
for(i=0; i<3; i++)
{
for(j=0; j<4; j++)
{
for(k=0; k<2; k++)
printf("%d ", arr[i][j][k]);
printf("\n");
}
printf("\n");
}
getch();
return 0;
}
This program was build and run under Code::Blocks IDE. Here is its sample output:
As you can see from the output given above, there are three two dimensional array gets printed.
To print all elements along with its index numbers. Here is the program:
// C Program for Three Dimensional (3D) Array
// ----codescracker.com----
#include<stdio.h>
#include<conio.h>
int main()
{
int i, j, k;
int arr[3][4][2] = {
{ {2, 4}, {7, 8}, {3, 4}, {5, 6} },
{ {7, 6}, {3, 4}, {5, 3}, {2, 3} },
{ {8, 9}, {7, 2}, {3, 4}, {5, 1} }
};
for(i=0; i<3; i++)
{
for(j=0; j<4; j++)
{
for(k=0; k<2; k++)
printf("arr[%d][%d][%d] = %d ", i, j, k, arr[i][j][k]);
printf("\n");
}
printf("\n");
}
getch();
return 0;
}
Here is its sample output:
