Having the prototype available before the first use of the function allows the compiler to check that the correct number and type of arguments are used in the function call and that the returned value, if any, is being used reasonably. The function definition itself can act as an implicit function declaration.
While shellac is not usually the finish paint choice, it is often thought of as the best paint primer available. It has properties that oil and water based paints can't match, and provides a more dependable seal than most other primers are able to provide.
up vote 2 down vote. Clear varnish does not contain pigments, and so it won't have any lead-based dyes. However, additives called drying agents are used in oil-based coatings such as varnish to accelerate the polymerization of the oil. One such agent that has historically been used is lead acetate.p vote 0 down vote. My understanding is that the varnish or shellac did not contain lead. How ever some of the stains that were used did contain lead. Also any sanding that was done during the original painting.