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Unlike
C++, a class can be specified as public, or not. A public
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class
within a library specifies which class(es) are available to
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a
client programmer
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The
public keyword just has to be placed somewhere before the opening
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brace
({) of the class body
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There
can be only one public class per compilation unit
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They
must be the same name as the file
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Without
the public qualifier, a class becomes “friendly”, available to the
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other
classes in the library to which it belongs
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Classes
cannot be private or protected.
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If
you don’t want anyone access to a class, then make the constructors
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private!
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