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Param Passing: Language Examples

• FORTRAN
  • Before 77, pass-by-reference
  • 77--scalar variables are often passed by value-result

• ALGOL 60
  • Pass-by-name is default; pass-by-value is optional

• ALGOL W: Pass-by-value-result

• C: Pass-by-value

• Pascal and Modula-2: Default is pass-by-value; pass-by-reference is optional