home *** CD-ROM | disk | FTP | other *** search
open in: 
MacOS 8.1
|
Win98
|
DOS
browse contents |
view JSON data
|
view as text
This file was processed as: Mailbox/MIME Entity
(archive/mbox).
| Confidence | Program | Detection | Match Type | Support
|
|---|
| 100%
| dexvert
| Newsgroup Content (archive/news)
| magic
| Supported |
| 100%
| dexvert
| Mailbox/MIME Entity (archive/mbox)
| magic
| Supported |
| 100%
| dexvert
| Internet Message Format (text/imf)
| magic
| Supported |
| 1%
| dexvert
| Text File (text/txt)
| fallback
| Supported |
| 100%
| file
| news, ASCII text
| default
| |
| 100%
| checkBytes
| Printable ASCII
| default
| |
| 100%
| dexmagic
| PrintFox/Pagefox WEAK
| default
| |
| 100%
| perlTextCheck
| Likely Text (Perl)
| default
| |
| 100%
| siegfried
| fmt/950 MIME Email (1.0)
| default
| |
| 100%
| detectItEasy
| Format: plain text[LF]
| default (weak)
| |
| 100%
| xdgMime
| message/news
| default
|
|
hex view+--------+-------------------------+-------------------------+--------+--------+
|00000000| 50 61 74 68 3a 20 72 65 | 64 2e 77 65 65 67 2e 75 |Path: re|d.weeg.u|
|00000010| 69 6f 77 61 2e 65 64 75 | 21 72 6f 62 69 6e 73 6f |iowa.edu|!robinso|
|00000020| 6e 0a 46 72 6f 6d 3a 20 | 54 68 65 20 41 6d 6f 72 |n.From: |The Amor|
|00000030| 70 68 6f 75 73 20 4d 61 | 73 73 20 3c 72 6f 62 69 |phous Ma|ss <robi|
|00000040| 6e 73 6f 6e 40 62 6c 75 | 65 2e 77 65 65 67 2e 75 |nson@blu|e.weeg.u|
|00000050| 69 6f 77 61 2e 65 64 75 | 3e 0a 4e 65 77 73 67 72 |iowa.edu|>.Newsgr|
|00000060| 6f 75 70 73 3a 20 63 6f | 6d 70 2e 6c 61 6e 67 2e |oups: co|mp.lang.|
|00000070| 63 0a 53 75 62 6a 65 63 | 74 3a 20 52 65 3a 20 4d |c.Subjec|t: Re: M|
|00000080| 65 6d 20 41 6c 6c 6f 63 | 61 74 69 6f 6e 20 69 6e |em Alloc|ation in|
|00000090| 20 66 75 6e 63 74 69 6f | 6e 73 0a 44 61 74 65 3a | functio|ns.Date:|
|000000a0| 20 53 75 6e 2c 20 31 34 | 20 4a 61 6e 20 31 39 39 | Sun, 14| Jan 199|
|000000b0| 36 20 30 31 3a 31 39 3a | 30 38 20 2d 30 36 30 30 |6 01:19:|08 -0600|
|000000c0| 0a 4f 72 67 61 6e 69 7a | 61 74 69 6f 6e 3a 20 55 |.Organiz|ation: U|
|000000d0| 6e 69 76 65 72 73 69 74 | 79 20 6f 66 20 49 6f 77 |niversit|y of Iow|
|000000e0| 61 2c 20 49 6f 77 61 20 | 43 69 74 79 2c 20 49 41 |a, Iowa |City, IA|
|000000f0| 2c 20 55 53 41 0a 44 69 | 73 74 72 69 62 75 74 69 |, USA.Di|stributi|
|00000100| 6f 6e 3a 20 77 6f 72 6c | 64 0a 4d 65 73 73 61 67 |on: worl|d.Messag|
|00000110| 65 2d 49 44 3a 20 3c 50 | 69 6e 65 2e 41 33 32 2e |e-ID: <P|ine.A32.|
|00000120| 33 2e 39 31 2e 39 36 30 | 31 31 34 30 31 30 34 34 |3.91.960|11401044|
|00000130| 36 2e 32 35 34 38 33 4a | 2d 31 30 30 30 30 30 40 |6.25483J|-100000@|
|00000140| 72 65 64 2e 77 65 65 67 | 2e 75 69 6f 77 61 2e 65 |red.weeg|.uiowa.e|
|00000150| 64 75 3e 0a 52 65 66 65 | 72 65 6e 63 65 73 3a 20 |du>.Refe|rences: |
|00000160| 3c 30 30 30 30 31 61 38 | 30 2b 30 30 30 30 36 62 |<00001a8|0+00006b|
|00000170| 61 37 40 6d 73 6e 2e 63 | 6f 6d 3e 0a 4e 4e 54 50 |a7@msn.c|om>.NNTP|
|00000180| 2d 50 6f 73 74 69 6e 67 | 2d 48 6f 73 74 3a 20 72 |-Posting|-Host: r|
|00000190| 65 64 2e 77 65 65 67 2e | 75 69 6f 77 61 2e 65 64 |ed.weeg.|uiowa.ed|
|000001a0| 75 0a 4d 69 6d 65 2d 56 | 65 72 73 69 6f 6e 3a 20 |u.Mime-V|ersion: |
|000001b0| 31 2e 30 0a 43 6f 6e 74 | 65 6e 74 2d 54 79 70 65 |1.0.Cont|ent-Type|
|000001c0| 3a 20 54 45 58 54 2f 50 | 4c 41 49 4e 3b 20 63 68 |: TEXT/P|LAIN; ch|
|000001d0| 61 72 73 65 74 3d 55 53 | 2d 41 53 43 49 49 0a 58 |arset=US|-ASCII.X|
|000001e0| 2d 53 65 6e 64 65 72 3a | 20 72 6f 62 69 6e 73 6f |-Sender:| robinso|
|000001f0| 6e 40 72 65 64 2e 77 65 | 65 67 2e 75 69 6f 77 61 |n@red.we|eg.uiowa|
|00000200| 2e 65 64 75 0a 49 6e 2d | 52 65 70 6c 79 2d 54 6f |.edu.In-|Reply-To|
|00000210| 3a 20 3c 30 30 30 30 31 | 61 38 30 2b 30 30 30 30 |: <00001|a80+0000|
|00000220| 36 62 61 37 40 6d 73 6e | 2e 63 6f 6d 3e 20 0a 0a |6ba7@msn|.com> ..|
|00000230| 4f 6e 20 31 33 20 4a 61 | 6e 20 31 39 39 36 2c 20 |On 13 Ja|n 1996, |
|00000240| 47 6f 72 64 6f 6e 20 54 | 68 6f 6d 61 73 20 77 72 |Gordon T|homas wr|
|00000250| 6f 74 65 3a 0a 0a 3e 20 | 49 20 73 68 6f 75 6c 64 |ote:..> |I should|
|00000260| 20 6b 6e 6f 77 20 74 68 | 65 20 61 6e 73 77 65 72 | know th|e answer|
|00000270| 2c 20 62 75 74 20 49 20 | 64 6f 6e 27 74 2e 20 49 |, but I |don't. I|
|00000280| 20 68 61 76 65 20 61 20 | 66 75 6e 63 74 69 6f 6e | have a |function|
|00000290| 0a 3e 20 0a 3e 20 23 69 | 6e 63 6c 75 64 65 20 3c |.> .> #i|nclude <|
|000002a0| 75 73 75 61 6c 20 73 74 | 75 66 66 3e 0a 3e 20 20 |usual st|uff>.> |
|000002b0| 76 6f 69 64 20 66 6f 6f | 28 66 6c 6f 61 74 20 2a |void foo|(float *|
|000002c0| 73 74 75 66 66 2c 20 69 | 6e 74 20 2a 6c 65 6e 67 |stuff, i|nt *leng|
|000002d0| 74 68 29 0a 3e 20 20 20 | 20 7b 0a 3e 20 20 20 20 |th).> | {.> |
|000002e0| 20 69 6e 74 20 69 3b 0a | 3e 20 20 20 20 20 73 74 | int i;.|> st|
|000002f0| 75 66 66 20 3d 20 63 61 | 6c 6c 6f 63 28 2a 6c 65 |uff = ca|lloc(*le|
|00000300| 6e 67 74 68 2c 20 73 69 | 7a 65 6f 66 28 66 6c 6f |ngth, si|zeof(flo|
|00000310| 61 74 29 29 3b 0a 3e 20 | 2f 2f 20 20 20 20 64 69 |at));.> |// di|
|00000320| 64 64 6c 65 20 61 72 6f | 75 6e 64 20 61 6e 64 20 |ddle aro|und and |
|00000330| 70 75 74 20 6e 75 6d 62 | 65 72 73 20 69 6e 20 73 |put numb|ers in s|
|00000340| 74 75 66 66 5b 69 5d 0a | 3e 20 20 20 20 20 72 65 |tuff[i].|> re|
|00000350| 74 75 72 6e 3b 0a 3e 20 | 20 20 20 7d 0a 0a 20 20 |turn;.> | }.. |
|00000360| 57 68 61 74 20 79 6f 75 | 20 6d 69 73 73 65 64 20 |What you| missed |
|00000370| 68 65 72 65 20 69 73 20 | 74 68 61 74 20 73 74 75 |here is |that stu|
|00000380| 66 66 20 69 73 20 66 6f | 6f 27 73 20 6c 6f 63 61 |ff is fo|o's loca|
|00000390| 6c 20 5f 63 6f 70 79 5f | 20 6f 66 20 73 6f 6d 65 |l _copy_| of some|
|000003a0| 6e 75 6d 73 20 0a 28 62 | 65 63 61 75 73 65 20 43 |nums .(b|ecause C|
|000003b0| 20 5f 61 6c 77 61 79 73 | 5f 20 70 61 73 73 65 73 | _always|_ passes|
|000003c0| 20 62 79 20 76 61 6c 75 | 65 29 2e 20 20 53 6f 20 | by valu|e). So |
|000003d0| 73 74 75 66 66 20 73 74 | 61 72 74 73 20 6f 75 74 |stuff st|arts out|
|000003e0| 20 68 6f 6c 64 69 6e 67 | 20 74 68 65 20 0a 73 61 | holding| the .sa|
|000003f0| 6d 65 20 76 61 6c 75 65 | 20 74 68 61 74 20 73 6f |me value| that so|
|00000400| 6d 65 6e 75 6d 73 20 68 | 65 6c 64 20 28 6a 75 6e |menums h|eld (jun|
|00000410| 6b 20 69 6e 20 74 68 69 | 73 20 63 61 73 65 29 2e |k in thi|s case).|
|00000420| 20 20 54 68 65 6e 20 79 | 6f 75 20 61 73 73 69 67 | Then y|ou assig|
|00000430| 6e 20 0a 73 74 75 66 66 | 20 61 20 70 6f 69 6e 74 |n .stuff| a point|
|00000440| 65 72 20 74 6f 20 63 61 | 6c 6c 6f 63 28 29 27 64 |er to ca|lloc()'d|
|00000450| 20 6d 65 6d 6f 72 79 2c | 20 6f 76 65 72 77 72 69 | memory,| overwri|
|00000460| 74 69 6e 67 20 69 74 73 | 20 6f 72 69 67 69 6e 61 |ting its| origina|
|00000470| 6c 20 76 61 6c 75 65 20 | 62 75 74 20 0a 5f 6e 6f |l value |but ._no|
|00000480| 74 5f 20 63 68 61 6e 67 | 69 6e 67 20 73 6f 6d 65 |t_ chang|ing some|
|00000490| 6e 75 6d 73 27 20 76 61 | 6c 75 65 20 28 62 65 63 |nums' va|lue (bec|
|000004a0| 61 75 73 65 20 73 6f 6d | 65 6e 75 6d 73 20 77 61 |ause som|enums wa|
|000004b0| 73 20 70 61 73 73 65 64 | 20 62 79 20 76 61 6c 75 |s passed| by valu|
|000004c0| 65 2c 20 0a 6e 6f 74 20 | 62 79 20 61 64 64 72 65 |e, .not |by addre|
|000004d0| 73 73 29 2e 0a 20 20 53 | 6f 20 79 6f 75 20 6e 65 |ss).. S|o you ne|
|000004e0| 65 64 20 74 6f 20 70 61 | 73 73 20 73 6f 6d 65 6e |ed to pa|ss somen|
|000004f0| 75 6d 73 20 62 79 20 61 | 64 64 72 65 73 73 20 73 |ums by a|ddress s|
|00000500| 6f 20 74 68 61 74 20 66 | 6f 6f 20 63 61 6e 20 63 |o that f|oo can c|
|00000510| 68 61 6e 67 65 20 69 74 | 73 20 0a 76 61 6c 75 65 |hange it|s .value|
|00000520| 2e 20 20 54 6f 20 64 6f | 20 73 6f 2c 20 63 68 61 |. To do| so, cha|
|00000530| 6e 67 65 20 66 6f 6f 27 | 73 20 64 65 63 6c 61 72 |nge foo'|s declar|
|00000540| 61 74 69 6f 6e 20 28 77 | 68 69 63 68 20 73 68 6f |ation (w|hich sho|
|00000550| 75 6c 64 20 72 65 61 6c | 6c 79 20 62 65 20 6f 75 |uld real|ly be ou|
|00000560| 74 73 69 64 65 20 0a 6d | 61 69 6e 29 20 74 6f 3a |tside .m|ain) to:|
|00000570| 0a 0a 76 6f 69 64 20 66 | 6f 6f 28 66 6c 6f 61 74 |..void f|oo(float|
|00000580| 20 2a 2a 2c 20 69 6e 74 | 20 2a 29 3b 0a 0a 20 20 | **, int| *);.. |
|00000590| 54 68 65 6e 20 63 68 61 | 6e 67 65 20 66 6f 6f 27 |Then cha|nge foo'|
|000005a0| 73 20 64 65 66 69 6e 69 | 74 69 6f 6e 20 74 6f 0a |s defini|tion to.|
|000005b0| 0a 76 6f 69 64 20 66 6f | 6f 28 66 6c 6f 61 74 20 |.void fo|o(float |
|000005c0| 2a 2a 73 74 75 66 66 2c | 20 69 6e 74 20 2a 6c 65 |**stuff,| int *le|
|000005d0| 6e 67 74 68 29 0a 0a 20 | 20 61 6e 64 20 63 68 61 |ngth).. | and cha|
|000005e0| 6e 67 65 20 74 68 65 20 | 6c 69 6e 65 20 77 68 65 |nge the |line whe|
|000005f0| 72 65 20 79 6f 75 20 61 | 6c 6c 6f 63 61 74 65 20 |re you a|llocate |
|00000600| 6d 65 6d 6f 72 79 20 74 | 6f 0a 0a 2a 73 74 75 66 |memory t|o..*stuf|
|00000610| 66 20 3d 20 63 61 6c 6c | 6f 63 28 2a 6c 65 6e 67 |f = call|oc(*leng|
|00000620| 74 68 2c 20 73 69 7a 65 | 6f 66 28 66 6c 6f 61 74 |th, size|of(float|
|00000630| 29 3b 0a 0a 20 20 53 69 | 6e 63 65 20 73 74 75 66 |);.. Si|nce stuf|
|00000640| 66 20 69 73 20 61 20 70 | 6f 69 6e 74 65 72 20 74 |f is a p|ointer t|
|00000650| 6f 20 73 6f 6d 65 6e 75 | 6d 73 2c 20 74 68 69 73 |o somenu|ms, this|
|00000660| 20 73 74 61 74 65 6d 65 | 6e 74 20 73 61 79 73 20 | stateme|nt says |
|00000670| 22 61 6c 6c 6f 63 61 74 | 65 20 0a 2a 6c 65 6e 67 |"allocat|e .*leng|
|00000680| 74 68 20 2a 20 73 69 7a | 65 6f 66 28 66 6c 6f 61 |th * siz|eof(floa|
|00000690| 74 29 20 6d 65 6d 6f 72 | 79 20 61 6e 64 20 61 73 |t) memor|y and as|
|000006a0| 73 69 67 6e 20 74 68 65 | 20 61 64 64 72 65 73 73 |sign the| address|
|000006b0| 20 74 6f 20 77 68 61 74 | 20 73 74 75 66 66 20 0a | to what| stuff .|
|000006c0| 70 6f 69 6e 74 73 20 74 | 6f 20 28 73 6f 6d 65 6e |points t|o (somen|
|000006d0| 75 6d 73 29 2e 22 0a 0a | 20 20 46 69 6e 61 6c 6c |ums)."..| Finall|
|000006e0| 79 2c 20 73 69 6e 63 65 | 20 79 6f 75 20 77 61 6e |y, since| you wan|
|000006f0| 74 20 74 6f 20 70 61 73 | 73 20 74 68 65 20 61 64 |t to pas|s the ad|
|00000700| 64 72 65 73 73 20 6f 66 | 20 73 6f 6d 65 6e 75 6d |dress of| somenum|
|00000710| 73 2c 20 79 6f 75 20 6e | 65 65 64 20 74 6f 20 0a |s, you n|eed to .|
|00000720| 73 61 79 20 73 6f 20 77 | 68 65 6e 20 79 6f 75 20 |say so w|hen you |
|00000730| 63 61 6c 6c 20 66 6f 6f | 3a 0a 0a 66 6f 6f 28 26 |call foo|:..foo(&|
|00000740| 73 6f 6d 65 6e 75 6d 73 | 2c 20 26 6e 70 29 3b 0a |somenums|, &np);.|
|00000750| 0a 20 20 53 69 64 65 20 | 6e 6f 74 65 3a 20 2f 2f |. Side |note: //|
|00000760| 20 69 73 20 61 20 73 79 | 6e 74 61 78 20 65 72 72 | is a sy|ntax err|
|00000770| 6f 72 20 69 6e 20 43 2e | 0a 0a 2f 2a 2a 4a 61 6d |or in C.|../**Jam|
|00000780| 65 73 20 52 6f 62 69 6e | 73 6f 6e 2a 2a 2a 2a 2a |es Robin|son*****|
|00000790| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a |********|********|
|000007a0| 2a 2a 20 20 20 20 20 20 | 20 20 20 20 20 20 0a 20 |** | . |
|000007b0| 20 22 49 66 20 61 20 66 | 61 74 61 6c 20 65 72 72 | "If a f|atal err|
|000007c0| 6f 72 20 6f 63 63 75 72 | 73 2c 20 74 68 65 20 70 |or occur|s, the p|
|000007d0| 72 6f 67 72 61 6d 20 73 | 68 6f 75 6c 64 20 6e 6f |rogram s|hould no|
|000007e0| 74 20 62 65 20 61 6c 6c | 6f 77 65 64 20 74 6f 20 |t be all|owed to |
|000007f0| 63 6f 6e 74 69 6e 75 65 | 2e 22 0a 20 2d 2d 20 4f |continue|.". -- O|
|00000800| 72 61 63 6c 65 20 50 72 | 6f 2a 43 20 55 73 65 72 |racle Pr|o*C User|
|00000810| 27 73 20 47 75 69 64 65 | 20 20 20 20 20 20 20 20 |'s Guide| |
|00000820| 20 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 6a 61 | *******|******ja|
|00000830| 6d 65 73 2d 72 6f 62 69 | 6e 73 6f 6e 40 75 69 6f |mes-robi|nson@uio|
|00000840| 77 61 2e 65 64 75 2a 2a | 2f 0a 0a |wa.edu**|/.. |
+--------+-------------------------+-------------------------+--------+--------+
