C# Foundations · Lesson 2

Variables

var stores a value under a name you can use again.

7 min guided lesson · Read, predict, then run

How it works

The name on the left is what later lines can read. count starts at 3. The next line reads that 3, adds 1, and stores 4 back into the same name. WriteLine prints the current value, so the output is 4, not 3.

A working example

var count = 3;
count = count + 1;
Console.WriteLine(count);

Open in playground

Expected output

Try this
Read the right-hand side first, then the name on the left.