Expression is a sequence of operators, operands, and punctuators that specifies a computation. Formally, expressions are defined recursively: subexpressions can be nested without formal limit. However, the compiler will report an out-of-memory error if it can’t compile an expression that is too complex.

In ANSI C, the primary expressions are: constant (also referred to as literal), identifier, and (expression), defined recursively.

Expressions are evaluated according to a certain conversion, grouping, associativity and precedence rules, which depends on the operators used, presence of parentheses and data types of the operands. The precedence and associativity of the operators are summarized in Operator Precedence and Associativity. The way operands and subexpressions are grouped does not necessarily specify the actual order in which they are evaluated by the mikroC PRO for ARM.

Expressions can produce lvalue, rvalue, or no value. Expressions might cause side effects whether they produce a value or not.

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