You do not have to use prototypes; so long as you define the function before you use it, it will work. In addition to Bazzy's words, if you ever want to use a function that you did not write and are not going to be compiling yourself (which I expect is very, very often), the compiler must still know what will be passed in and what will be returned. Last edited on.
Many myths cloud the emergence and prominence of shellac after the appearance of nitro cellulose. One chief legend states shellac is not waterproof. Shellac, just as many other finishes, is not waterproof, however, it is quite water resistant. Shellac can easily withstand water for about 4 hours. Even if the surface is not wiped, the resulting faint white stain will still fade away as it dries.
Furthermore, shellac tends to show scratches and white rings when in contact with water. It also doesnât penetrate the surface so it may form some sort of film on top of the wood. It is important to note that when buying shellac, you should only buy the amount you need. This is because keeping it in the can for a long period of time will spoil it. When spoiled, this finish can actually give out a very foul odor.