Home » Archimedes archive » Acorn User » AU 1994-10.adf » !Extras_Extras » CTutorial/c/Signed
CTutorial/c/Signed
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 1994-10.adf » !Extras_Extras |
| Filename: | CTutorial/c/Signed |
| Read OK: | ✔ |
| File size: | 015D bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
File contents
/* Program 'Signed' to determine whether char */
/* variables are signed or unsigned by default */
/* on a compiler. */
#include <stdio.h>
main()
{
unsigned char uch=-1;
signed char sch=-1;
char ch=-1;
if(ch == uch) printf("chars are unsigned\n");
if(ch == sch) printf("chars are signed\n");
return 0;
} 00000000 2f 2a 20 50 72 6f 67 72 61 6d 20 27 53 69 67 6e |/* Program 'Sign|
00000010 65 64 27 20 74 6f 20 64 65 74 65 72 6d 69 6e 65 |ed' to determine|
00000020 20 77 68 65 74 68 65 72 20 63 68 61 72 20 20 2a | whether char *|
00000030 2f 0a 2f 2a 20 76 61 72 69 61 62 6c 65 73 20 61 |/./* variables a|
00000040 72 65 20 73 69 67 6e 65 64 20 6f 72 20 75 6e 73 |re signed or uns|
00000050 69 67 6e 65 64 20 62 79 20 64 65 66 61 75 6c 74 |igned by default|
00000060 20 2a 2f 0a 2f 2a 20 6f 6e 20 61 20 63 6f 6d 70 | */./* on a comp|
00000070 69 6c 65 72 2e 20 20 20 20 20 20 20 20 20 20 20 |iler. |
00000080 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
00000090 20 20 20 2a 2f 0a 0a 23 69 6e 63 6c 75 64 65 20 | */..#include |
000000a0 3c 73 74 64 69 6f 2e 68 3e 0a 0a 6d 61 69 6e 28 |<stdio.h>..main(|
000000b0 29 0a 7b 0a 20 20 75 6e 73 69 67 6e 65 64 20 63 |).{. unsigned c|
000000c0 68 61 72 20 75 63 68 3d 2d 31 3b 0a 20 20 73 69 |har uch=-1;. si|
000000d0 67 6e 65 64 20 63 68 61 72 20 73 63 68 3d 2d 31 |gned char sch=-1|
000000e0 3b 0a 20 20 63 68 61 72 20 63 68 3d 2d 31 3b 0a |;. char ch=-1;.|
000000f0 0a 20 20 69 66 28 63 68 20 3d 3d 20 75 63 68 29 |. if(ch == uch)|
00000100 20 70 72 69 6e 74 66 28 22 63 68 61 72 73 20 61 | printf("chars a|
00000110 72 65 20 75 6e 73 69 67 6e 65 64 5c 6e 22 29 3b |re unsigned\n");|
00000120 0a 20 20 69 66 28 63 68 20 3d 3d 20 73 63 68 29 |. if(ch == sch)|
00000130 20 70 72 69 6e 74 66 28 22 63 68 61 72 73 20 61 | printf("chars a|
00000140 72 65 20 73 69 67 6e 65 64 5c 6e 22 29 3b 0a 0a |re signed\n");..|
00000150 20 20 72 65 74 75 72 6e 20 30 3b 0a 7d | return 0;.}|
0000015d 
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