Programming Language One. and ALGOL 60. Developed by George Radin of IBM in 1964. Originally named NPL and Fortran VI. The result is large but elegant. PL/I was one of the first languages to have a formal EPL, a dialect of PL/I, was used to write almost all of the internally at IBM. The PL/I standard is ANS X3.53-1976. complex, character strings with maximum length, bit strings, and label variables. Arrays have lower bounds and may be dynamic. It also has summation, multi-level structures, groups; do-to-by-while-end loops; external procedures; ('call task' and 'wait(event)' are equivalent to fork/join) and compile-time statements. ["A Structural View of PL/I", D. Beech, Computing Surveys, 2,1 33-64 (1970)]. (1994-10-25)
|
