1 REM [DR. SHILLING 4/10/84]
2 REM: BASIC QUIZZ FOR WOULD-BE HACKERS
3 C$=CHR$(34)
4 TI$ = "000000"
5 Y$ = ""
6 REM [TO RUN THE QUIZZ, JUST 'RUN']
7 REM [TO EXAMINE PROBLEMS, 'RUN 1300']
8 GOTO 50
9 REM (LINES 10-30 ARE RESERVED)
49 STOP
50 PRINT"[147]"
52 PRINT"I AM YOUR USER-FRIENDLY COMMODORE-64"
54 PRINT
56 PRINT"       BASIC QUIZZ NO. 1"
58 PRINT
60 PRINT"MY FIRST PROGRAM IS:":PRINT
62 PRINT"  10 A% = 33000 "
64 PRINT"  11 ? A% "
66 PRINT:PRINT"BUT WHEN YOU RUN IT, I WILL TELL YOU:"
68 PRINT
70 PRINT "? ILLEGAL QUANTITY ERROR IN 10"
71 IF Y$ <> "YES" THEN 74
72 PRINT" (ENTER PROGRAM LINES WITH CURSOR, THEN RUN '10' TO VERIFY)":STOP
74 PRINT:PRINT"DO YOU WANT TO KNOW WHY?"
76 INPUT" (PRESS RETURN KEY)";K$
78 PRINT"[145][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192]"
80 PRINT:PRINT"I CAN'T HANDLE INTEGERS LARGER"
82 PRINT"  THAN 32767  -  THAT'S WHY."
84 PRINT
86 INPUT" (PRESS RETURN KEY TO CONTINUE)";K$
100 PRINT"[147]"
102 PRINT"       BASIC QUIZZ NO. 2"
104 PRINT
110 PRINT"MY NEXT PROGRAM IS:":PRINT
120 PRINT"  12 DIM F (10), G (20)"
130 PRINT"  13 DIM F1 % (11)"
140 PRINT"  14 DIM F3 (1,2,3,4,5,6)"
150 PRINT"  15 DIM FF1 (5)"
160 PRINT"  16 DIM FF2 (55)"
170 PRINT
180 PRINT"HERE IS THE PROBLEM:"
190 PRINT"  IF YOU TYPE 'RUN 12'  I WILL GIVE YOU  THE MESSAGE:"
200 PRINT"  ? REDIM'D ARRAY ERROR IN 16"
202 IF Y$ <> "YES" THEN 210
205 PRINT# (ENTER PROGRAM LINES WITH CURSOR, THEN RUN '12' TO VERIFY):STOP
210 PRINT:PRINT"WHY?  WHAT'S WRONG?"
220 INPUT"(PRESS RETURN KEY FOR ANSWER";K$
230 PRINT"[145][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192]"
234 PRINT
240 PRINT"SORRY, BUT I CAN READ ONLY THE FIRST TWO CHARACTERS OF ANY VARIABLE."
250 PRINT"  FF1 AND FF2 ARE THE SAME TO ME!"
260 PRINT"(AND YOU MUST NOT DIMENSION A VARIABLE  MORE THAN ONCE)."
280 PRINT
290 INPUT" (PRESS RETURN KEY TO GO ON)";K$
300 PRINT"[147]"
302 PRINT"       BASIC QUIZZ NO. 3"
304 PRINT
310 PRINT"MY NEXT PROGRAM IS:":PRINT
320 PRINT 17"CLYDE = 999:? CLYDE"
330 PRINT 18"GER $ = "C$ "GERRY" C$ ":? GER $"
340 PRINT 19"LOR $ = "C$ "LORNA" C$ ":? LOR $"
350 PRINT
360 PRINT "HERE IS THE PROBLEM:"
370 PRINT "   IF YOU TYPE 'RUN 17'  I WILL PRINT:"
380 PRINT
400 CLYDE = 999 : PRINT CLYDE
410 GER$ = "GERRY" : PRINT GER$
430 PRINT"?SYNTAX ERROR IN 19"
440 PRINT
450 PRINT "  W H Y  ??  WHAT'S WRONG?"
460 PRINT
462 IF Y$ <> "YES" THEN 470
465 PRINT" (ENTER PROGRAM LINES WITH CURSOR, THEN RUN '17' TO VERIFY":STOP
470 INPUT" (PRESS RETURN KEY TO GO ON)";K$
482 PRINT"[145][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192][192]"
490 PRINT
500 PRINT "LOR $ CONTAINS THE BASIC KEYWORD 'OR'!"
510 PRINT "  THE SAME THING WOULD HAPPEN, IF YOU     USED, FOR EXAMPLE,"
520 PRINT "  'LAND' INSTEAD OF 'CLYDE' IN LINE 17."
530 INPUT " (PRESS RETURN TO GO ON)";K$
600 PRINT "[147]"
602 PRINT "       BASIC QUIZZ NO.4"
610 PRINT "MY NEXT PROGRAM IS:"
612 PRINT
630 PRINT"20 INPUT"  C$ "YES OR NO" C$"; Y$
640 [153]"21 IF Y$ <> " C$ "YES" C$ " OR Y$ <> " C$ "NO" C$ " THEN 20"
650 [153]"22 IF Y$ <> " C$ "YES" C$ "AND Y$ <> " C$ "NO" C$ "THEN 20"
660 [153]"23 IF Y$ = " C$ "YES" C$ " OR  Y$ = " C$ "NO" C$ " THEN 20"
670 [153]"24 IF Y$ = "C$ "YES" C$ "AND Y$ = " C$ "NO" C$ "THEN 20"
680 [153]
700 [153] "HERE IS THE PROBLEM:"
710 [153]:[153] "YOU WANT TO MAKE SURE THAT NOTHING BUT"
712 [153]"  EITHER 'YES' OR 'NO' IS ENTERED"
714 [153]"  AS 'Y$' IN LINE 20."
716 [153]"IF NOT, ASK FOR INPUT AGAIN."
718 [153]
720 [153]" WHICH IS CORRECT, LINE 21, OR LINE 22, OR LINE 23, OR LINE 24?"
740 [153]
742 [139] Y$ [179][177] "YES" [167] 750
745 [153]" (ENTER WITH CURSOR, BUT DO NOT RUN '20'. IT WILL HANG-UP !)"
750 [133] "READY FOR THR ANSWER? (PRESS RETURN KEY)";K$
762 [153]"ONTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTAN"
770 [153]"  O N L Y   LINE  22 IS CORRECT!:"
772 [153]
780 [153]"WARNING: IF YOU TRY OTHERS, WATCH OUT;"
790 [153]" I MAY HANG UP YOUR PROGRAM WITH SOME"
792 [153]" OR THE OTHER LINES..."
796 [133]" (PRESS RETURN KEY TO GO ON)"; K$
800 [153]"LOAD"
810 [153]"       BASIC QUIZZ NO. 5"
820 [153]"MY NEXT PROGRAM IS:"
822 [153]
824 [153]"  25 X = SQR(100) : Y = 10"
826 [153]"  26 PRINT " C$ "X=" C$ "X " C$ "  Y=" C$ "Y " C$ "  X-Y=" C$ " X - Y"
828 [153]"  27 IF X <. Y THEN PRINT " ; : [153] C$ "WRONG !"
830 [153]
832 [153]"IF I 'RUN' I PRINT AS FOLLOWS:"
842 X [178] [186](100): Y [178] 10
844 [153]"  X=" X"   Y=" Y"   X-Y="X[171]Y
846 [139] X [179][177] Y [167] [153] "  WRONG !"
848 [153]
850 [153]"I FIND INDEED THAT THE SQUARE-ROOT OF 100 IS NOTWAIT EQUAL TO 10 !"
860 [153]
862 [139] Y$ [179][177] "YES" [167] 870
865 [153] "(ENTER PROGRAMS LINES WITH CURSOR, THEN RUN '25' TO VERIFY)":[144]
870 [153]"DO YOU WANT TO KNOW WHY NOT?"
880 [133]"(PRESS RETURN KEY)";K$
892 [153]"ONTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTAN"
900 [153]"BECAUSE WHILE I PRINT :X=" X
910 [153]"                  AND: Y=" Y
920 [153]:[153]"I CALCULATED THAT THERE IS A DIFFERENCE BETWEEN X AND Y OF"X[171]Y
940 [153]
950 [153]"  IT IS ONLY .0000000037252903  BUT....."
960 [153]"   I HAVE TROUBLE WITH CERTAIN DECIMAL     FRACTIONS (SUCH AS .33333)"
970 [153]
980 [133] "(PRESS RETURN KEY TO GO ON)";K$
1000 [153]"LOAD"
1002 [153]"       BASIC QUIZZ NO. 6"
1004 [153]
1005 C$[178][199](34)
1010 [153]"MY NEXT NEXT PROGRAM IS:":[153]
1020 [153] 29 "PRINT CHR$ (14)"
1030 [153]" 30 PRINT";:[153] C$"(null)LEFT$VAL (null)(null)RIGHT$LEN(null) PEEK(null)(null)(null)(null) ASC(null)(null) MID$(null)(null)(null)VALSTR$ (null)(null)VAL(null) (null)LEFT$VAL (null)ATN(null)(null) STR$(null)CHR$."
1040 [153]
1050 [153] "HERE IS THE PROBLEM:"
1052 [153] "     WHAT DOES IT MEAN,"
1054 [153] " AND HOW DID I DO THAT?"
1056 [139] Y$ [179][177] "YES" [167] 1058
1057 [153] "(ENTER PROGRAM LINES WITH CURSOR, THEN RUN '29' TO VERIFY)":[144]
1058 [153]
1060 [153]" (PRESS ANY KEY TO GO ON)"
1062 [161] K$: [139] K$[178]"" [167] 1062
1070 [153]"ON                     "
1080 [153]"ON                         "
1082 [153]"ON                         "
1084 [153]"ON                         "
1086 [153]"ON                         "
1090 [153]"ONONONONONON"
1100 [153] [199](14)
1110 [153]
1120 [153]" (null)(null)(null) LENATN(null) (null)(null)(null) (null)VALATNSTR$ (null)RIGHT$(null)VAL 30 ?"
1130 [153]
1140 [153]"CLOSE((null)(null)VAL(null)(null) ATN(null)(null)CLOSE(null)VAL(null)CLOSE(null)(null)CLOSECHR$(null)CLOSE(null)(null))"
1142 [161] K$:[139]K$[178]"" [167] 1142
1144 [153]"ONTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTAN"
1146 [153] [199](142)
1150 [153]" WELL, IT'S REALLY SIMPLE:"
1160 [153]"I JUST TYPED SHIFTED LETTERS;"
1162 [153]"AND THEY CAME OUT AS SYMBOLS."
1164 [153]" IF YOU REALLY WANT TO CONFUSE YOURSELF"
1166 [153]" STUDY PAGE 74 OF THE C-64 PROGRAMMER'S  REFERENCE GUIDE. HAVE FUN!"
1170 [153]
1172 [129] T[178]1 [164] 2000:[130] T
1173 [153] [199](14)
1174 [129] T[178]1 [164] 1000:[130] T
1175 [153] [199](142)
1177 [153]"ONONON"
1180 [133]" (PRESS RETURN KEY TO CONTINUE)"; K$
1200 [153] "LOAD"
1220 [153]"  I AM GETTING TO FANCY;"
1222 [153]"  ENOUGH OF THIS STUFF."
1226 [153]"TANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTAN"
1240 [156]
1250 [153]"THE PROGRAM LENGTH WAS:" ; 38909 [171] ( [184](1) [171] ([184](1) [179]0 ) [172] 65536 )
1252 [153]"  FREE BYTES REMAINING."; [184](1) [171] ( [184](1)[179]0)[172] 65536
1255 [153]
1260 J1 [178] TI[173]216000:J2[178](J1[171][181](J1) ) [172] 60:J3 [178] ( J2[171][181](J2) ) [172] 60
1262 JX[178]J3:J3 [178] [181](JX[170].5)
1264 [153]"  SINCE YOU STARTED THIS QUIZZ,"
1266 [153]"THE FOLLOWING TIMES HAS ELAPSED:"
1270 [153]
1272 [153] [181](J1) "HOURS"[181](J2)"MINUTES"(J3)"SECONDS"
1274 [153]"TANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTANTAN"
1280 [153]"PS.:  DO YOU WANT TO EXAMINE WHETHER I        HAVE SPOKEN TRUE ?"
1282 [133]"YES OR NO";Y$
1284 [139] Y$ [179][177] "YES" [175] Y$ [179][177] "NO" [167] [153] "TRY AGAIN":[137] 1282
1290 [153]"   (null)        (null)    END   (null)         (null)"
1292 [153]"            (null)    73   (null)"
1294 [153]
1296 [153]"  AU REVOIR  FROM YOUR FRIENDLY C-64."
1299 [128]
1300 [153]"LOAD"
1310 [153]"INSTRUCTIONS FOR TRUE HACKERS:"
1320 [153]
1330 [153]"WHENEVER A 'BREAK' OCCURES,"
1340 [153]
1350 [153]"1. GO UP WITH CURSOR TO THE TOPMOST"
1352 [153]"NUMBERED PROGRAM LINE"
1354 [153]"2. HIT THE RETURN KEY FOR EACH NUMBERED"
1356 [153]"PROGRAM LINE"
1358 [153]"3. INPORTANT: DO NOT HIT THE RETURN KEY ANY FURTHER !"
1360 [153]"4. MOVE CURSOR DOWN BELOW 'READY.'"
1362 [153]
1364 [153]"THE NUMBERED QUIZ LINES ARE NOW"
1366 [153]"ENTERED BETWEEN LINES 10 AND 30 AS PART"
1368 [153]"OF THE MAIN PROGRAM."
1372 [153]"(LATER, 'LIST-30' AND SEE.)"
1374 [153]"NOW: 'RUN 10' OR 12 OR 17 OR 25 OR 29 AS INDICATED ON THE SCREEN."
1380 [153]"['RUN 20' WILL HANG-UP OF COURSE ![]]"
1382 [153]
1384 [153]"REMEMBER, TO ENTER THE PROBLEMS THIS WAY JUST  'RUN 1300'."
1386 [153]
1400 C$ [178] [199](34) : T$ [178] "YES"
1410 [153]"O.K.  WHICH QUIZZ DO YOU WANT TO CHECK:"
1420 [133]"QUIZZ NUMBER (BETWEEN 1 AND 6)";N%
1440 [145] N% [137] 54,100,300,600,800,1000,1450
1450 [137] 1290