HP SunSoft Pascal 4.0 - Manual (Page 105)

Separate Compilation 81
5
The program unit,
pubvar_prog.p , which declares
global as public
program pubvar_prog;
public var
global: integer;
procedure proc;
external;
begin
global := 1;
writeln('From MAIN, before PROC: ', global);
proc;
writeln('From MAIN, after PROC: ', global)
end. { pubvar_prog }
The module unit, pubvar_mod.p ,
which also declares global as
public
module pubvar_mod;
public var
global : integer;
procedure proc;
begin
writeln('From PROC :',global);
global := global + 1;
end; { proc }
The commands to compile and
execute
pubvar_prog.p and
pubvar_mod.p
hostname% pc -xl pubvar_prog.p pubvar_mod.p
pubvar_prog.p:
pubvar_mod.p:
Linking:
hostname% a.out
From MAIN, before PROC: 1
From PROC : 1
From MAIN, after PROC: 2