Home » Archimedes archive » Acorn User » AU 1994-11.adf » !C/!Help
!C/!Help
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 » Archimedes archive » Acorn User » AU 1994-11.adf |
| Filename: | !C/!Help |
| Read OK: | ✔ |
| File size: | 0332 bytes |
| Load address: | FFFFFF45 |
| Exec address: | 9497F4F2 |
File contents
C Tutorial by David Matthewman This archive contains two programs to accompany the C tutorial in the magazine. In both cases the source code for the programs is in the �c� directory, with the executable program itself in the root directory of the archive (provided for those of you without a C compiler). The Arithmetic program takes two variables and performs all the binary operations mentioned in the article on them. Thus the different results of all the various operations can be seen. Note that in order to perform a floating-point division, one of the integer operands needed to be cast to a floating-point number. The Precedence program demonstrates the precedence of various operators. Try to work out what the result should be from the source code befor running the program. � Copyright Acorn User 1994
00000000 43 20 54 75 74 6f 72 69 61 6c 0a 62 79 20 44 61 |C Tutorial.by Da| 00000010 76 69 64 20 4d 61 74 74 68 65 77 6d 61 6e 0a 0a |vid Matthewman..| 00000020 54 68 69 73 20 61 72 63 68 69 76 65 20 63 6f 6e |This archive con| 00000030 74 61 69 6e 73 20 74 77 6f 20 70 72 6f 67 72 61 |tains two progra| 00000040 6d 73 20 74 6f 20 61 63 63 6f 6d 70 61 6e 79 20 |ms to accompany | 00000050 74 68 65 20 43 20 74 75 74 6f 72 69 61 6c 20 69 |the C tutorial i| 00000060 6e 20 74 68 65 20 6d 61 67 61 7a 69 6e 65 2e 20 |n the magazine. | 00000070 49 6e 20 62 6f 74 68 20 63 61 73 65 73 20 74 68 |In both cases th| 00000080 65 20 73 6f 75 72 63 65 20 63 6f 64 65 20 66 6f |e source code fo| 00000090 72 20 74 68 65 20 70 72 6f 67 72 61 6d 73 20 69 |r the programs i| 000000a0 73 20 69 6e 20 74 68 65 20 90 63 91 20 64 69 72 |s in the .c. dir| 000000b0 65 63 74 6f 72 79 2c 20 77 69 74 68 20 74 68 65 |ectory, with the| 000000c0 20 65 78 65 63 75 74 61 62 6c 65 20 70 72 6f 67 | executable prog| 000000d0 72 61 6d 20 69 74 73 65 6c 66 20 69 6e 20 74 68 |ram itself in th| 000000e0 65 20 72 6f 6f 74 20 64 69 72 65 63 74 6f 72 79 |e root directory| 000000f0 20 6f 66 20 74 68 65 20 61 72 63 68 69 76 65 20 | of the archive | 00000100 28 70 72 6f 76 69 64 65 64 20 66 6f 72 20 74 68 |(provided for th| 00000110 6f 73 65 20 6f 66 20 79 6f 75 20 77 69 74 68 6f |ose of you witho| 00000120 75 74 20 61 20 43 20 63 6f 6d 70 69 6c 65 72 29 |ut a C compiler)| 00000130 2e 0a 0a 54 68 65 20 41 72 69 74 68 6d 65 74 69 |...The Arithmeti| 00000140 63 20 70 72 6f 67 72 61 6d 20 74 61 6b 65 73 20 |c program takes | 00000150 74 77 6f 20 76 61 72 69 61 62 6c 65 73 20 61 6e |two variables an| 00000160 64 20 70 65 72 66 6f 72 6d 73 20 61 6c 6c 20 74 |d performs all t| 00000170 68 65 20 62 69 6e 61 72 79 20 6f 70 65 72 61 74 |he binary operat| 00000180 69 6f 6e 73 20 6d 65 6e 74 69 6f 6e 65 64 20 69 |ions mentioned i| 00000190 6e 20 74 68 65 20 61 72 74 69 63 6c 65 20 6f 6e |n the article on| 000001a0 20 74 68 65 6d 2e 20 54 68 75 73 20 74 68 65 20 | them. Thus the | 000001b0 64 69 66 66 65 72 65 6e 74 20 72 65 73 75 6c 74 |different result| 000001c0 73 20 6f 66 20 61 6c 6c 20 74 68 65 20 76 61 72 |s of all the var| 000001d0 69 6f 75 73 20 6f 70 65 72 61 74 69 6f 6e 73 20 |ious operations | 000001e0 63 61 6e 20 62 65 20 73 65 65 6e 2e 20 4e 6f 74 |can be seen. Not| 000001f0 65 20 74 68 61 74 20 69 6e 20 6f 72 64 65 72 20 |e that in order | 00000200 74 6f 20 70 65 72 66 6f 72 6d 20 61 20 66 6c 6f |to perform a flo| 00000210 61 74 69 6e 67 2d 70 6f 69 6e 74 20 64 69 76 69 |ating-point divi| 00000220 73 69 6f 6e 2c 20 6f 6e 65 20 6f 66 20 74 68 65 |sion, one of the| 00000230 20 69 6e 74 65 67 65 72 20 6f 70 65 72 61 6e 64 | integer operand| 00000240 73 20 6e 65 65 64 65 64 20 74 6f 20 62 65 20 63 |s needed to be c| 00000250 61 73 74 20 74 6f 20 61 20 66 6c 6f 61 74 69 6e |ast to a floatin| 00000260 67 2d 70 6f 69 6e 74 20 6e 75 6d 62 65 72 2e 0a |g-point number..| 00000270 0a 54 68 65 20 50 72 65 63 65 64 65 6e 63 65 20 |.The Precedence | 00000280 70 72 6f 67 72 61 6d 20 64 65 6d 6f 6e 73 74 72 |program demonstr| 00000290 61 74 65 73 20 74 68 65 20 70 72 65 63 65 64 65 |ates the precede| 000002a0 6e 63 65 20 6f 66 20 76 61 72 69 6f 75 73 20 6f |nce of various o| 000002b0 70 65 72 61 74 6f 72 73 2e 20 54 72 79 20 74 6f |perators. Try to| 000002c0 20 77 6f 72 6b 20 6f 75 74 20 77 68 61 74 20 74 | work out what t| 000002d0 68 65 20 72 65 73 75 6c 74 20 73 68 6f 75 6c 64 |he result should| 000002e0 20 62 65 20 66 72 6f 6d 20 74 68 65 20 73 6f 75 | be from the sou| 000002f0 72 63 65 20 63 6f 64 65 20 62 65 66 6f 72 20 72 |rce code befor r| 00000300 75 6e 6e 69 6e 67 20 74 68 65 20 70 72 6f 67 72 |unning the progr| 00000310 61 6d 2e 0a 0a a9 20 43 6f 70 79 72 69 67 68 74 |am.... Copyright| 00000320 20 41 63 6f 72 6e 20 55 73 65 72 20 31 39 39 34 | Acorn User 1994| 00000330 0a 0a |..| 00000332
.