Boolean literals: True and False are literals of the Boolean type that map to the true and false state, respectively.
Integer literals: Used to write values of types Int, ulnt, long, and ulong.
Real literals: Used to write values of types float, double, and dedmal.
Character literals: Represents a single character and usually consists of a character in quotes, such as 'a'.
String literals: C# supports two types of string literals, regular string literal and verbatim string literals