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Static Type Binding

• If static, type may be specified by either an explicit or an implicit declaration

• An explicit declaration is a program statement used for declaring the types of variables

• An implicit declaration is a default mechanism for specifying types of variables (the first appearance of the variable in the program)
  • FORTRAN, PL/I, BASIC, and Perl provide implicit declarations
    • Advantage: writability
    • Disadvantage: reliability (less trouble with Perl)