throw operator

throw operator

Throws an exception

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  throw-expr  ::= throw [  assignment-expr  ] 

The throw operator throws assignment-expr as an exception. The throw expression has type void . With no operand, throw rethrows the current pending exception. If no exception is pending, terminate( ) is called.

Example

 template<typename C> typename C::value_type checked_first(const C& c) {   if (not c.empty(  ))     return c[0];  throw  std::out_of_range("container is empty"); } 

See Also

expression , try , Chapter 3, <exception> , <stdexcept>