The index to an array can be a variable. That makes it possible to use a loop to process the array.
int[] num= { 3, 5, 7, 1, 6 }; int total = 0; for(int j = 0; j < num.Length; j++) { total += num[j]; //Add each elemnt of the array to total } this.Text = "" + total;
Notice the use of num.Length in the for loop. The length of the array is 5 (the number of elements), but they are numbered 0 to 4. The loop adds together elements from num[0] (the first element) to num[4] (the last element.)
