Language Elements and Reference:xpplrm
Operators Foundation
Operators are an essential component of program code. They perform operations using one or more operands and provide a result. An operand is generally a literal or a variable, but it can also be an expression. Xbase++ distinguishes different categories of operators, each of which is described in this chapter. Operators can generally be used only with a subset of the available data types and often with only a single data type.
Operators can be unary or binary. Unary operators complete an operation using only one operand. Binary operators always require two operands. For some unary operators the position relative to the operand is significant. In these cases, there is a difference between prefix notation (the operator appears in front of the operand) and postfix notation (the operator appears after the operand).
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