PL/I（/piː ɛl wʌn/），源自编程语言一号（Programming Language One）的缩写，一种过程式、指令式编程语言。由IBM公司在1960年代发明的第三代高级编程语言，用于IBM的MVS、或迪吉多的VAX/VMS等操作系统中。 在系统软件，图像，仿真，文字处理，网络，商业软件等领域均可应用。
样例代码
Hello2: proc options(main);
put list ('Hello, world!');
end Hello2;
/* Read in a line, which contains a string,
/* and then print every subsequent line that contains that string. */
find_strings: procedure options (main);
declare pattern character (100) varying;
declare line character (100) varying;
declare line_no fixed binary;
on endfile (sysin) stop;
get edit (pattern) (L);
line_no = 1;
do forever;
get edit (line) (L);
if index(line, pattern) > 0 then
put skip list (line_no, line);
line_no = line_no + 1;
end;
end find_strings;
引用
外部链接
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