literálokat

Literálok, in the context of programming, refer to fixed values that are directly written into the source code. Unlike variables, which can hold values that change during program execution, literals represent a constant, unchanging value. They are the most basic way to represent data within a program.

There are several common types of literals. Numeric literals represent numbers. These can be integers, such as 10 or -5, or floating-point numbers, such as 3.14 or -2.5. String literals represent sequences of characters, enclosed in quotation marks, like "Hello, world!" or "example". Boolean literals represent truth values, typically true or false. Character literals represent a single character, enclosed in single quotes, for example, 'A' or '$'.

Literals are fundamental building blocks in programming languages. They are used in assignments to variables, as arguments to functions, and in expressions to perform calculations or comparisons. For instance, in the statement `x = 10;`, the value `10` is a numeric literal. Similarly, in `print("Hello");`, `"Hello"` is a string literal. Understanding literals is crucial for writing and comprehending code, as they are the direct representation of data values within a program. Their immutability makes them reliable for defining specific, fixed data points.