C# `while` Loop: Implementing Conditional Looping

Learn how to use `while` loops in C# for creating conditional loops that execute repeatedly as long as a specified condition is true. This tutorial covers basic `while` loop syntax, nested `while` loops, and provides examples demonstrating its application in various programming scenarios.

Understanding C#'s `while` Loop

The `while` loop in C# repeatedly executes a block of code as long as a specified condition is true. It's particularly useful when you don't know the exact number of iterations beforehand.

`while` Loop Syntax

while (condition) {
    // Code to be executed repeatedly as long as the condition is true
}

The code within the curly braces `{}` will execute as long as the `condition` evaluates to `true`. If the condition is initially `false`, the loop body won't execute at all.

Example 1: Simple `while` Loop

This example prints numbers 1 through 10:

int i = 1;
while (i <= 10) {
    Console.WriteLine(i);
    i++;
}

Example 2: Nested `while` Loops

Nested `while` loops involve placing one `while` loop inside another. The inner loop executes completely for each iteration of the outer loop.

int i = 1;
while (i <= 3) {
    int j = 1;
    while (j <= 3) {
        Console.WriteLine($"{i} {j}");
        j++;
    }
    i++;
}

Example 3: Infinite `while` Loop

An infinite loop continues indefinitely unless explicitly terminated (e.g., using `break` or by pressing Ctrl+C in the console):

while (true) {
    Console.WriteLine("This loop runs forever!");
}