C# language basics

Build confidence with variables, expressions and loops before adding object-oriented abstractions. Every example should be understandable in plain .NET without requiring Unity.

Lessons and practical examples

• Conditions, switch and ternary: Make decisions with if, else, else if, switch and conditional expressions.

• Enums, files and exceptions: Named states, safe file I/O, try/catch/finally and failure handling.

• Loops and iteration: while, do while, for, foreach, break and continue with practical examples.

• Methods, parameters and overloading: Declare methods, return values, use optional and named arguments, overload safely.

• Operators and expressions: Arithmetic, assignment, comparison, logic and Math methods.

• Strings, characters and booleans: Concatenation, interpolation, indexing, escaping and true/false values.

• Syntax, variables and constants: Start a C# program, name values, print output and avoid mutable magic numbers.

• Data types and type conversion: Choose integers, floating-point types, decimals and safe conversions.

How to study this section

Start with one concept, work through a small example, and verify your prediction. Follow linked topics when a prerequisite or related idea needs more explanation.