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program test_open_files;
const
MaxOpenTest = 150;
var
f : array [1..MaxOpenTest] of text;
i,count : longint;
error : word;
s : string;
storeexit : pointer;
Max : longint;
procedure Errorexit;
begin
exitproc:=storeexit;
if errorcode=4 then
begin
if count<=15 then
begin
Writeln('The program could not open more than 15 files !');
Writeln('Retry after addition of the following line to config.sys file');
Writeln('FILES=60');
Writeln('If it still does not work after this change');
Writeln('you probably use a too old RTL version');
Writeln('that does not support more than 15 files');
Writeln('open at the same time');
end
else
begin
Writeln('The program was able to open ',count,' files simultaneously');
Writeln('If you need to be able to have more opened files');
Writeln('Try to increase the FILES=XX value in config.sys file');
{ This is not a RTL error anymore
as we increased the size over the ordinary 15 limit }
erroraddr:=nil;
errorcode:=0;
exitcode:=0;
end;
{ close all left open files }
for i:=count downto 1 do
begin
close(f[i]);
erase(f[i]);
end;
end;
end;
begin
StoreExit:=exitproc;
ExitProc:=@ErrorExit;
Max:=MaxOpenTest;
if paramcount>0 then
begin
val(paramstr(1),count,error);
if error = 0 then
Max:=count;
count:=0;
end;
for i:=1 to Max do
begin
str(i,s);
s:='file'+s+'.tmp';
assign(f[i],s);
rewrite(f[i]);
count:=i;
Writeln(f[i],'This is file ',i);
Writeln(i,' files open');
{ no closing so they are finally all open }
end;
for i:=Max downto 1 do
begin
close(f[i]);
erase(f[i]);
end;
end.
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