C# - What are Loops

Loops in C#

In C#, there are several types of loops that you can use to repeat a block of code. Here are the main types of loops available:

1. for Loop

The for loop is typically used when you know in advance how many times you want to execute a statement or a block of statements.

for (int i = 0; i < 10; i++)
{
    Console.WriteLine($"Iteration {i}");
}

Result

Iteration 0
Iteration 1
Iteration 2
Iteration 3
Iteration 4
Iteration 5
Iteration 6
Iteration 7
Iteration 8
Iteration 9

2. foreach Loop

The foreach loop is used to iterate over the elements of a collection (like arrays, lists, etc.).

int[] numbers = { 1, 2, 3, 4, 5 };
foreach (int number in numbers)
{
    Console.WriteLine(number);
}

3. while Loop

The while loop executes a block of statements as long as a specified condition is true. The condition is evaluated before the execution of the loop's body.
Code

int count = 0;
while (count < 5)
{
    Console.WriteLine("Count: " + count);
    count++;
}

4. do-while Loop

The do-while loop is similar to the while loop, but the condition is evaluated after the execution of the loop's body. This means the code block will be executed at least once.

int count = 0;
do
{
    Console.WriteLine("Count: " + count);
    count++;
} while (count < 5);

5. break Statement

The break statement is used to exit from the innermost loop or switch statement in which it appears.

for (int i = 0; i < 10; i++)
{
    if (i == 5)
    {
        break; // Exit the loop
    }
    Console.WriteLine(i);
}

6. continue Statement

The continue statement skips the current iteration of the loop and proceeds with the next iteration.

for (int i = 0; i < 10; i++)
{
    if (i % 2 == 0)
    {
        continue; // Skip even numbers
    }
    Console.WriteLine(i);
}