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2.3.2.1.1 Syntax of an Integer

*Integers* can be written as a sequence of *digits*, optionally preceded by a *sign* and optionally followed by a decimal point; see Figure 2-9. When a decimal point is used, the *digits* are taken to be in *radix* `10`; when no decimal point is used, the *digits* are taken to be in radix given by the *current input base*.

For information on how *integers* are printed, see Section 22.1.3.1.1 (Printing Integers).

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