What is PL/I written in?

Year 1964 Paradigm imperative, procedural Typing static
The PL/I compiler is written in Assembly (documented).

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Compiler Implementation

LanguageConfidenceNotesSource
Assembly 85% Early PL/I compilers for IBM System/360 written in assembly Source

Influenced By

Frequently Asked Questions

What language is PL/I written in?
PL/I is primarily implemented in Assembly. See the implementation section above for details and source references.
What languages influenced PL/I?
PL/I was influenced by COBOL, Fortran among others. See the influence section above for the full list.

Evidence Sources

Related Languages

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