C# Academy · Lesson

Looping Over Arrays

for and foreach.

Why Loop?

Arrays often hold many values, and you rarely want to type each index by hand. A loop repeats an action for every element automatically.

This lets you print, sum, or check all values with just a few lines.

A for loop uses a counter. Start it at 0 and continue while the counter is less than Length, increasing by one each time.

The counter doubles as the index, so you can access each element.

int[] nums = { 10, 20, 30 };
for (int i = 0; i < nums.Length; i++)
{
    Console.WriteLine(nums[i]);
}