entities from the standard library, include the appropriate header file. • You may not use a using-directive to make all names from a namespace available. // Forbidden -- This pollutes the namespace. using error: narrowing conversion. Preprocessor Directives The hash mark that starts a preprocessor directive should always be at the beginning of the line. Even when preprocessor directives are within the

variable may solve the problem without the need to line-wrap. 4.5.1 Where to break The prime directive of line-wrapping is: prefer to break at a higher syntactic level. Also: 1. When a line is broken