21 lines
887 B
Markdown
21 lines
887 B
Markdown
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# Exporting Functions
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A function declared in a mql5 program with the export postmodifier can be used in another mql5 program. Such a function is called exportable, and it can be called from other programs after compilation.
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```
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int Function() export
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{
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}
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```
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This modifier orders the compiler to add the function into the table of EX5 functions exported by this ex5 file. Only function with such a modifier are accessible ("visible") from other mql5 programs.
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The [library](/en/docs/basis/preprosessor/compilation) property tells the compiler that the EX5-file will be a library, and the compiler will show it in the header of EX5.
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All functions that are planned as exportable ones must be marked with the export modifier.
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See also
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[Overload](/en/docs/basis/oop/overload), [Virtual Functions](/en/docs/basis/oop/virtual), [Polymorphism](/en/docs/basis/oop/polymorphism)
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