catch keyword — Exception handler in try statement
handler ::= catch ( exception-declaration ) compound-statement exception-declaration ::= type-specifier-seq declarator | type-specifier-seq abstract-declarator | type-specifier-seq | . . .
The catch
keyword introduces
an exception handler in a try
statement. A single try
statement
must have one or more catch
blocks.
The exception-declaration declares an exception
handler object. If an exception is thrown in the try
's compound-statement
, the type of the
exception object is compared with the type of each catch
declaration. The compound-statement
of the first catch
block whose type matches that of the
exception object is executed. A catch
block (typically the last one in a
try
statement) can have an
ellipsis ( . .
. ) as
the exception-declaration
to
match all exceptions.