use of (void) type in C

[utzoo!watmath!rday]

  A common use of the void type is to use it as a cast for functions
which normally return values, but you wish to ignore:

      strcpy(str1,str2)  will cause lint to respond that strcpy always
                         returns which is ignored, but

 (void) strcpy(str1,str2)  keeps lint happy.

  In either case, normal cc compiling will work correctly.