Home » Personal collection » Acorn ADFS disks » Electron_User_Group » EUG_31.ADF » L/+Thom1
L/+Thom1
This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.
Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.
| Tape/disk: | Home » Personal collection » Acorn ADFS disks » Electron_User_Group » EUG_31.ADF |
| Filename: | L/+Thom1 |
| Read OK: | ✔ |
| File size: | 0212 bytes |
| Load address: | 2B204556 |
| Exec address: | 6D6F6854 |
File contents
23 March 1997 Dear Gus I was surprised to note that no-one commented on the solution to Alva's problem of duplicate random numbers in a selection program for entry into the Lottery. The use of n%( ) as a 'multipul flag' is something that I have never seen before. I have since used it in an error trapped input routine to prevent entry of the same number twice. Other methods require more programming to achieve the same result. The author deserves a commendation! Regards Ray Thomas LIKE TO SEE THE ROUTINE YOU DEVELOPED.
00000000 0d 32 33 20 4d 61 72 63 68 20 31 39 39 37 0d 0d |.23 March 1997..| 00000010 44 65 61 72 20 47 75 73 0d 0d 49 20 77 61 73 20 |Dear Gus..I was | 00000020 73 75 72 70 72 69 73 65 64 20 74 6f 20 6e 6f 74 |surprised to not| 00000030 65 20 74 68 61 74 20 6e 6f 2d 6f 6e 65 20 63 6f |e that no-one co| 00000040 6d 6d 65 6e 74 65 64 20 6f 6e 20 74 68 65 20 73 |mmented on the s| 00000050 6f 6c 75 74 69 6f 6e 20 74 6f 20 41 6c 76 61 27 |olution to Alva'| 00000060 73 0d 70 72 6f 62 6c 65 6d 20 6f 66 20 64 75 70 |s.problem of dup| 00000070 6c 69 63 61 74 65 20 72 61 6e 64 6f 6d 20 6e 75 |licate random nu| 00000080 6d 62 65 72 73 20 69 6e 20 61 20 73 65 6c 65 63 |mbers in a selec| 00000090 74 69 6f 6e 20 70 72 6f 67 72 61 6d 20 66 6f 72 |tion program for| 000000a0 20 65 6e 74 72 79 20 69 6e 74 6f 0d 74 68 65 20 | entry into.the | 000000b0 4c 6f 74 74 65 72 79 2e 20 54 68 65 20 75 73 65 |Lottery. The use| 000000c0 20 6f 66 20 6e 25 28 20 29 20 61 73 20 61 20 27 | of n%( ) as a '| 000000d0 6d 75 6c 74 69 70 75 6c 20 66 6c 61 67 27 20 69 |multipul flag' i| 000000e0 73 20 73 6f 6d 65 74 68 69 6e 67 20 74 68 61 74 |s something that| 000000f0 20 49 0d 68 61 76 65 20 6e 65 76 65 72 20 73 65 | I.have never se| 00000100 65 6e 20 62 65 66 6f 72 65 2e 20 49 20 68 61 76 |en before. I hav| 00000110 65 20 73 69 6e 63 65 20 75 73 65 64 20 69 74 20 |e since used it | 00000120 69 6e 20 61 6e 20 65 72 72 6f 72 20 74 72 61 70 |in an error trap| 00000130 70 65 64 20 69 6e 70 75 74 0d 72 6f 75 74 69 6e |ped input.routin| 00000140 65 20 74 6f 20 70 72 65 76 65 6e 74 20 65 6e 74 |e to prevent ent| 00000150 72 79 20 6f 66 20 74 68 65 20 73 61 6d 65 20 6e |ry of the same n| 00000160 75 6d 62 65 72 20 74 77 69 63 65 2e 20 4f 74 68 |umber twice. Oth| 00000170 65 72 20 6d 65 74 68 6f 64 73 20 72 65 71 75 69 |er methods requi| 00000180 72 65 0d 6d 6f 72 65 20 70 72 6f 67 72 61 6d 6d |re.more programm| 00000190 69 6e 67 20 74 6f 20 61 63 68 69 65 76 65 20 74 |ing to achieve t| 000001a0 68 65 20 73 61 6d 65 20 72 65 73 75 6c 74 2e 20 |he same result. | 000001b0 54 68 65 20 61 75 74 68 6f 72 20 64 65 73 65 72 |The author deser| 000001c0 76 65 73 20 61 0d 63 6f 6d 6d 65 6e 64 61 74 69 |ves a.commendati| 000001d0 6f 6e 21 0d 0d 52 65 67 61 72 64 73 0d 0d 52 61 |on!..Regards..Ra| 000001e0 79 20 54 68 6f 6d 61 73 0d 0d 4c 49 4b 45 20 54 |y Thomas..LIKE T| 000001f0 4f 20 53 45 45 20 54 48 45 20 52 4f 55 54 49 4e |O SEE THE ROUTIN| 00000200 45 20 59 4f 55 20 44 45 56 45 4c 4f 50 45 44 2e |E YOU DEVELOPED.| 00000210 0d 0d |..| 00000212
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