Scanners 5.3.2 Constants and Limits Compiler character representation of internal values. 5.3.3 Program constructs Operators and Expressions Specific characters are used to represent specific operations. The range of operators varies from one language to the next. For most languages the basic operators are the same. As well as the order of precedence.
Some languages let the programmer extend the meaning of an operator.
Floating Point Limits and Precision Floating point numbers represent a wide range of values. But not with the same precision every where. For example zero divided by zero. Like .100 Floating point standards Enumerated Types Usually represented internally by an integer. 16 Bit character standards.