Language Features
S2's structure closely resembles that of most imperative programming languages, and includes basic instructions such as variable assignments, arithmetic operations, conditional flow control and for loops over finite sets (however, it distinctly lacks while loops). Being object-oriented, S2 allows the declaration of classes with members and methods, but global (non-class-specific) functions can also be defined. Recursion is allowed, but nesting functions is not.
Read more about this topic: S2 (programming Language)
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