C# Operators & Math

Arithmetic, logical operators and Math.

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Arithmetic: + - * / % ++ -- (int / int gives an int)
Comparison: == != > < >= <=
Logical: && || !
Null operators: ?? (default if null) and ?. (safe member access)

The Math class: Math.Max(), Math.Sqrt(), Math.Pow(), Math.Round(), Math.Abs().

Key Takeaways: C# Operators & Math

Mastering C# Operators & Math helps you write clean and reliable C# code. Follow standard conventions, test edge cases, and keep logic simple. Try running the code example below and complete the exercises to build confidence.

C# Operators & Math Code Example

Console.WriteLine(17 / 5);
Console.WriteLine(17 / 5.0);
Console.WriteLine(17 % 5);
Console.WriteLine(Math.Sqrt(81));
Console.WriteLine(Math.Pow(2, 10));
Console.WriteLine(Math.Round(3.14159, 2));

string? nickname = null;
Console.WriteLine(nickname ?? "Guest");
Console.WriteLine(nickname?.Length ?? 0);

Output