Variables and types

C# is strongly typed — every variable has a type the compiler enforces — but it stays friendly, with inference when you want it.

Explicit types

State the type, then the name:

The everyday types:

Type	Holds	Example
int	whole numbers	42
double	decimals	3.14
string	text	"hello"
bool	true / false	true
char	one character	'A'

var: let the compiler infer

When the value makes the type obvious, var saves repetition:

var is not loose typing — the type is fixed at compile time, just inferred rather than spelled out. var n = 12; n = "hi"; is still an error. Use var when the right-hand side is clear, explicit types when they aid readability.

The compiler has your back

Assigning a string to an int is caught before the program runs — the same strong-typing safety you met in TypeScript, Java, and Swift, here with C#'s polish.