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Ada Programming/Pragmas/Import

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Ada. Time-tested, safe and secure.
Ada. Time-tested, safe and secure.

Summary

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The pragma Import directs the compiler to use code or data objects written in a foreign computer language.

Which foreign languages are supported depends on the compiler implementation. Typically C, C++, Cobol, and Fortran are supported.

Example

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/* C file */
int my_C_function() {
  return 1;
}

-- Ada File
function My_C_Function return Integer;
pragma Import
  (Convention    => C,
   Entity        => My_C_Function,
   External_Name => "my_C_function" );
...
Some_Variable := My_C_Function; -- Ada uses a foreign language like a pro!
                                -- Huzzah!

See also

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Wikibook

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