Summary - C# basics
Combine Main, WriteLine and comments to write your first C# program.
Summary
In this unit you learned the basics of C#:
- C# is a type-safe language that runs on .NET
- The Main method is the program's entry point
Console.WriteLineprints output to the screen//and/* */write comments$"..."performs string interpolation
Now let's combine these to build small applications.
Exercise First mini app
Add a Console.WriteLine line inside the empty Main. The output must be Hello C#.
Show example solution
Inside Main add Console.WriteLine("Hello C#");.
Example solution:
using System;
class Program
{
static void Main()
{
Console.WriteLine("Hello C#");
}
}Exercise Second mini app
Use string interpolation to produce Result: 5. Embed the {2 + 3} expression.
Show example solution
{2 + 3}");.
Example solution:
using System;
class Program
{
static void Main()
{
// Print the result with interpolation
Console.WriteLine($"Result: {2 + 3}");
}
}Test yourself
-
Importing a namespace
using ____;Show answer
using System; -
Summary matching
- Console.WriteLine
- Prints a line
- //
- Single-line comment
- $"
- Interpolation prefix
- Main
- Entry point