(autosprintf.info)Class autosprintf

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2 The 'autosprintf' class
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An instance of class 'autosprintf' just contains a string with the
formatted output result.  Such an instance is usually allocated as an
automatic storage variable, i.e. on the stack, not with 'new' on the
heap.

   The constructor 'autosprintf (const char *format, ...)' takes a
format string and additional arguments, like the C function 'printf'.

   Conversions to 'char *' and 'std::string' are defined that return the
encapsulated string.  The conversion to 'char *' returns a freshly
allocated copy of the encapsulated string; it needs to be freed using
'delete[]'.  The conversion to 'std::string' returns a copy of the
encapsulated string, with automatic memory management.

   The destructor '~autosprintf ()' destroys the encapsulated string.

   An 'operator <<' is provided that outputs the encapsulated string to
the given 'ostream'.