12. Example Programs

 10 REM LISSAJOUX 1
 20 MODE 1
 50 FOR F=0 TO 4 STEP 0.2
 60 MOVE 640,912
 70 A=0
 80 REPEAT
 90 A=A+0.1
100 DRAW 400*SIN(A)+640,400*COS(A*F)+512
110 UNTIL INKEY(0)=32
120 CLG
130 NEXT
140 END

 10 REM LISSAJOUX 2
 20 MODE 1
 40 B%=RND(5)
 50 C%=RND(5)
 60 FOR A=0 TO 1000 STEP PI/30
 70 X%=250*COS(A)
 80 MOVE X%+640,X%+512
 90 DRAW 500*COS(A/B%)+640,500*SIN(A/C%)
100 NEXT

 10 REM C-CURVE
 20 MODE 0
 30 MIN%=12
 40 MOVE 300,200
 50 PROCC (200,0)
 60 REPEAT UNTIL FALSE
 70 DEFPROCC (L%,ANGLE)
 80 IF L%<MIN% THEN PLOT1,L%*COS(ANGLE), L%* SIN (ANGLE) : ENDPROC
 90 L%=L%/SQR(2)
100 PROCC (L%,ANGLE+PI/4)
110 PROCC (L%,ANGLE-PI/4)
120 ENDPROC

 10 REM TOWER OF HANOI
 20 INPUT "NUMBER OF DISCS ",F
 30 PROCHANOI (F,1,2,3)
 40 END
 50 DEFPROCHANOI (A,B,C,D) IF A=0 ENDPROC
 60 PROCRANOI (A-l, B, D, C)
 70 PRINT "MOVE DISC ";A;" FROM PILE ";B; TO PILE ";C
 80 PROCRANOI (A-1,D,C,B)
 90 ENDPROC

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