C++ LANGUAGE ACCESSING TWO-DIMENSIONAL ARRAY ELEMENTS

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C++ LANGUAGE ACCESSING TWO-DIMENSIONAL ARRAY ELEMENTS

Accessing Two-Dimensional Array Elements 


An element in 2-dimensional array is accessed by using 
the subscripts, i.e., row index and column index of the 
array. For example: 

int val = a[2][3]; 

The above statement will take 4th element from the 
3rd row of the array. You can verify it in the above digram. 

#include <iostream> 
using namespace std; 
  
int main () 
{ 
   // an array with 5 rows and 2 columns. 
   int a[5][2] = { {0,0}, {1,2}, {2,4}, {3,6},{4,8}}; 
  
   // output each array element's value                       
   for ( int i = 0; i < 5; i++ ) 
      for ( int j = 0; j < 2; j++ ) 
      { 
         cout << "a[" << i << "][" << j << "]: "; 
         cout << a[i][j]<< endl; 
      } 
  
   return 0; 
} 
When the above code is compiled and executed, it produces the following result: 
a[0][0]: 0 
a[0][1]: 0 
a[1][0]: 1 
a[1][1]: 2 
a[2][0]: 2 
a[2][1]: 4 
a[3][0]: 3 
a[3][1]: 6 
a[4][0]: 4 
a[4][1]: 8 
As explained above, you can have arrays with any number of dimensions, 
although it is likely that most of the arrays you create will be of one or two dimensions.