Expressions
In GPC almost anything you write is an expression. The simplest yet most accurate way to define an expression is "anything that has a value". The most basic forms of expressions are constants and variables. When you type "a = 5", you're assigning 5 into a. After this assignment, you'd expect a's value to be 5 as well, so if you wrote "b = a", you'd expect it to behave just as if you wrote "b = 5". In other words, a is an expression with the value of 5 as well.
An expression statement consists just of any expression. Basically, expressions are:
Examples:
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