Review the solution to the variable scope challenge activity

  • 6 minutes

The following code is one possible solution for the challenge from the previous unit:

int[] numbers = { 4, 8, 15, 16, 23, 42 };
int total = 0;
bool found = false;

foreach (int number in numbers)
{
    total += number;
    if (number == 42)
        found = true;
}

if (found)
    Console.WriteLine("Set contains 42");

Console.WriteLine($"Total: {total}");

This code is merely "one possible solution" because you may have added line feeds in different spots, and you may have formatted the code differently.

The biggest changes to the problematic code included:

  • Moving the declaration of the total and found variables outside of the foreach statement.
  • Initializing both the total and found variables with sensible default values.
  • Removing the code blocks (curly braces) from the if statements.

No matter how you formatted the code, when you run the code, you should see the following output:

Set contains 42
Total: 108

If you were successful, congratulations! Continue on to the knowledge check in the next unit.

Important

If you had trouble completing this challenge, maybe you should review the previous units before you continue on.