How can global variables be hidden from other compilation units?

Pick one of the following languages: Python, Modula, Ada, C, or Perl. After consulting an authoritative reference, discuss each of the following requirements for that language: (a) Declaration before use. (b) Overloading of operators for programmer-defined types. (c) Binding time of array size. (d) What constitutes a scope. (e) Location of a declaration within a […]