27 Dec
2001
27 Dec
'01
9:47 p.m.
Accordnig to both ISO standards, readln(f) should be equivalent to get(f), when eoln(f) is true. In GPC the former seems to be implemented as lazy I/O, while the latter does not.
Here is an example (enter three lines of text to test it).
---------------------------- program echo3lines(input,output);
procedure copyline; begin while not eoln do begin output^:=input^; get(input); put(output) end end;
begin write('Enter the first line: '); copyline; readln; writeln; write('Enter the second line: '); copyline; get(input); writeln; write('Enter the last line: '); copyline; readln; writeln end. ----------------------------------------
Is this a bug or a feature?
Emil Jerabek