We’ll soon discuss the type double
for specifying real numbers, and the type char
for specifying character data. Real numbers are numbers with decimal points, such as 3.4, 0.0 and –11.19. A char
variable may hold only a single lowercase letter, a single uppercase letter, a single digit or a single special character (e.g., $
or *
). Types such as int
, double
and char
are called fundamental types. Fundamental-type names consist of one or more keywords and therefore must appear in all lowercase letters. Appendix C contains the complete list of fundamental types.
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