title: how to select a range in multidimensional array in C++?
body: <p>Lets say i have: </p>
  
  <pre><code>int array[9][9]= {
  
          {1 , 2 , 3 , 4, 5, 6, 7, 8, 9},
          {10, 11, 12, 13, 14, 15, 16, 17, 18},
          {19, 20, 21, 22, 23, 24, 25, 26, 27},
          {28, 29, 30, 31, 32, 33, 34, 35, 36},
          {37, 38, 39, 40, 41, 42, 43, 44, 45},
          {46, 47, 48, 49, 50, 51, 52, 53, 54},
          {55, 56, 57, 58, 59, 60, 61, 62, 63},
          {64, 65, 66, 67, 68, 69, 70, 71, 72},
          {73, 74, 75, 76, 77, 78, 79, 80, 81}
  
      };
  </code></pre>
  
  <p>how can i only apply some function to the first row (value 1 to 9 ) or the first column only (like value 1 to 73). lets say i want to say index 0 to 9 shall all have value 0. </p>
  
  <p>is it possible to save this range in a variable? </p>