Comments are useful for explaining the purpose of a piece of code or how it works. Comments can also be used to identify the author of code or when it was created or last updated.
In C# the // characters (two forward slashes) are used to add comments to your code. Any text on a line after the two forward slashes will not be treated as code. Comments are useful as they contain notes about what is happening in the code and can help others understand the algorithm. They won’t change the way a program runs and won’t be visible in the working program.
Here is an example of a comment:
// This is a comment |
Watch the video below to see how to use comments and scroll down for the sample code.
Sample code
using System; namespace MyCSharpProject { class MainClass { public static void Main(string[] args) { string message = "The result is "; float num1 = 6f; // Assign value to num1 variable float num2 = 4f; // Assign value to num2 variable float result = num1 + num2 + 10f; // Add numbers result = num1 - num2; // Subtract result = num1 * num2; // Multiply result = num1 / num2; // Divide result = num1 % num2; // Mod int num3 = 30; num3--; Console.WriteLine(result); Console.WriteLine(num3); } } }
Next tutorial: Combining types in output statements