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qb64/programs/samples/misc/frac2.bas
Luke Ceddia b586eafd3b Integrated _BLINEINPUT into regular LINE INPUT for BINARY files
LINE INPUT will now use the faster method if passed a file handle
that has been opened FOR BINARY. As such, the _BLINEINPUT command
has been removed.

qb64.bas now takes advantage of this for reading from '$include files,
at least in Include Manager 1. Some tweaking of internal/source/main.txt
was required to get things into a sane state, so I'm holing off changing
the compiler any further so the auto-builder can make sure everything's
smoothed over.

Note: Everything should still compile as normal; I'm just being overcautious.
2014-07-27 00:06:17 +10:00

19 lines
288 B
QBasic

CLS
SCREEN 8
s1 = 225
f1 = 1.4
s2 = 225
f2 = .35
x = .4
y = .1
FOR i = 1 TO 2000
x1 = y + 1 - 1.4 * x * x
y = .3 * x
IF s1 * (x1 + f1) < 640 AND x1 + f1 > 0 THEN
IF s2 * (y + f2) < 350 AND y + f2 > 0 THEN
PSET (s1 * (x1 + f1), s2 * (y + f2))
END IF
END IF
x = x1
NEXT