[fpc-pascal]EOF function

[James Mills]

Hi,

The following (attached) is a programming problem I've implemented.
Now I know the way I've done the EOF test is not correct, otherwise it
would not crash with a runtime error of 106.

Could someone show me the correct way of reading from stdin until there
is no more input ?

cheers
James

-- 
-
-Zero Defect Software Engineers Group - ZDSEG
-
-You need only two tools. WD-40 and duct tape.
-If it doesn't move and it should, use WD-40.
-If it moves and shouldn't, use the tape.

program cycle;

function isEven(n: longInt): Boolean;
begin
	if (n MOD 2 = 0) then
		begin
			isEven := TRUE;
		end
	else
		begin
			isEven := FALSE;
		end;
end;

function getCycle(n: longInt): longInt;
var
	c:	longInt;
begin
	c := 1;
	while NOT (n = 1) do
		begin
			if isEven(n) then
				begin
					n := n DIV 2;
				end
			else
				begin
					n := n * 3 + 1;
				end;
			inc(c);
		end;
	getCycle := c;
end;

function getMaxCycle(i: longInt; j: longInt): longInt;
var
	max:	longInt;
	x:		longInt;
	c:		longInt;
begin
	max := 0;
	for c := i to j do
		begin
			x := getCycle(c);
			if (x > max) then
				begin
					max := x;
				end;
		end;
	getMaxCycle := max;
end;

var
	i:	longInt;
	j:	longInt;
begin
	while NOT EOF do
		begin
			read(input, i, j);
			writeLn(getMaxCycle(i, j));
		end;
end.

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