Web Reference: Dec 11, 2025 · Like all programming languages, Pascal provides some means to modify memory. This concept is known as variables. Variables are named chunks of memory. You can use them to store data you cannot predict. Constants, on the other hand, are named pieces of data. Pascal programming language also allows defining various other types of variables, which we will cover in subsequent chapters like Pointer, Array, Records, Sets, and Files, etc. For this chapter, let us study only basic variable types. Variables are declared using the var keyword, followed by the variable name and its type. Multiple variables of the same type can be declared on a single line. Pascal uses := for assignment, not for declaration and initialization in one step. The WriteLn procedure is used for output, similar to fmt.Println in the original example.
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