C++ Multidimensional Arrays

The multidimensional array is also known as rectangular arrays in C++. It can be two dimensional or three dimensional. The data is stored in tabular form (row ∗ column) which is also known as matrix.

C++ Multidimensional Array Example

Let's see a simple example of multidimensional array in C++ which declares, initializes and traverse two dimensional arrays.

#include <iostream>
using namespace std;
int main()
{
  int test[3][3];  //declaration of 2D array 
    test[0][0]=5;  //initialization 
    test[0][1]=10; 
    test[1][1]=15;
    test[1][2]=20;
    test[2][0]=30;
    test[2][2]=10;
    //traversal  
    for(int i = 0; i < 3; ++i)
    {
        for(int j = 0; j < 3; ++j)
        {
            cout<< test[i][j]<<" ";
        }
        cout<<"\n"; //new line at each row 
    }
    return 0;
}

Output:

5 10 0 
0 15 20 
30 0 10

C++ Multidimensional Array Example: Declaration and initialization at same time

Let's see a simple example of multidimensional array which initializes array at the time of declaration.

#include <iostream>
using namespace std;
int main()
{
  int test[3][3] =
    {
        {2, 5, 5},
        {4, 0, 3},
        {9, 1, 8}  };  //declaration and initialization  
    //traversal  
    for(int i = 0; i < 3; ++i)
    {
        for(int j = 0; j < 3; ++j)
        {
            cout<< test[i][j]<<" ";
        }
        cout<<"\n"; //new line at each row 
    }
    return 0;
}

Output:"

2 5 5 
4 0 3 
9 1 8

Next TopicC++ Pointers

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