Basic Output

Part of the Fundamentals section of Coddy's C# journey — lesson 31 of 69.

In C#, you can display output to the console using the System.Console.WriteLine method. This method prints text or values to the console and moves to a new line afterward.

System.Console.WriteLine("Hello, world!");
System.Console.WriteLine(42);

Output:

Hello, world!
42

The System.Console.WriteLine method can handle different data types, including strings, numbers, and even variables.

Using `System` Namespace:

The Console class belongs to the System namespace. At the start of your program, ensure you include:

using System;

This makes the Console class available without needing to write System.Console every time.

Now you can use Console.WriteLine to create interactive and engaging outputs in your programs!

Challenge

Beginner

Write a C# program that uses Console.WriteLine to output the following:

Print "Hello, Coddy!" on a new line.
Print "C# is fun!" on a new line.

Cheat sheet

To display output to the console in C#, use the System.Console.WriteLine method:

Console.WriteLine("Hello, world!");
Console.WriteLine(42);

The System.Console.WriteLine method prints text or values and moves to a new line afterward. It can handle different data types including strings, numbers, and variables.

Include the System namespace at the start of your program:

using System;

This allows you to use Console.WriteLine without writing System.Console every time.

Try it yourself

using System;

public class Program {
    public static void Main(string[] args) {
        // Write your code here

    }
}

Test yourself

This lesson includes a short quiz. Start the lesson to answer it and track your progress.

All lessons in Fundamentals

1Introduction

C#Hello World!Comments Basic Program Structure

4Operators Part 1

Arithmetic Operators Modulo Operator Increment/Decrement Post Increment/Decrement Arithmetic Shortcuts

7Basic IO

Basic OutputString Interpolation Reading Input Parse Recap - Till 120 Recap - True or False

10Methods (Functions)

Declaring Methods Method Parameters Return Types Optional Parameters Recap - Validation Function Void Methods

13Iterating Over Collections

Using For Loop Foreach Loop Common Array Operations

2Variables Part 1

Numbers Char String Boolean Type Declaration

5Operators Part 2

Comparison Operators Logical Operators Part 1 Logical Operators Part 2 Recap - Simple Logic Logical Operators Part 3

8Calculator App

Welcome Message Getting Numbers

Basic Operations

Formatted Output

11Arrays Basics

Declaring Arrays Accessing Elements Modifying Arrays Array Methods Recap - Product Array Edit Recap - Reversed Array

14Final Challenges

Number Pattern Pattern Finder Student Grade Calculator

3Variables Part 2

Var Constants Naming Conventions Recap - Initialize Variables Type Casting

6Decision Making

If Statement If - Else Switch Statement Ternary Operator Recap - If Else Nested If - Else

9Loops

For Loop While Loop Do While Loop Break Continue Nested Loop Infinite Loop Recap - Dynamic Input

12String Operations

String Methods Part 1 String Methods Part 2 String Formatting

Basic Output

Using System Namespace:

Cheat sheet

All lessons in Fundamentals

Using `System` Namespace: