c++ how to display a 2d array code example

Example 1: print 2d array c++

for( auto &row : arr) {
    for(auto col : row)
         cout << col << " ";
	cout<<endl; 
}

Example 2: how to print a 2d array in c++

for (int i = 0; i < m; i++) 
{ 
   for (int j = 0; j < n; j++) 
   { 
      cout << arr[i][j] << " "; 
   } 
     
   // Newline for new row 
   cout << endl; 
}