Home » Archimedes archive » Acorn User » AU 1995-07.adf » !Regulars_Regulars » C/c/RandomA
C/c/RandomA
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 1995-07.adf » !Regulars_Regulars |
| Filename: | C/c/RandomA |
| Read OK: | ✔ |
| File size: | 0B67 bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
File contents
/* C for Yourself - Acorn User July 1995
Demonstration of random access file handling
by Steve Mumford */
#include <stdio.h>
void
main(void)
{
FILE *pointer;
char buffer[255];
int x, loop;
printf("Random Access file handling\n");
printf("---------------------------\n\n");
printf("Creating file...\n\n");
if ((pointer = fopen("<C$Dir>.datafile", "w")) == 0) {
printf("File could not be opened for writing.\n");
return;
}
printf("Please enter 5 strings of 15 characters or less:\n\n");
printf("(Longer strings will be truncated)\n");
for (loop = 1; loop <= 5; loop ++) {
for (x = 0; x <= 15; x++) {
buffer[x] = '\0';
}
/* The above loop clears the string array by individually filling its first
few elements with null bytes. */
printf("Please enter string number %d:\n", loop);
gets(buffer);
/* The user's string is copied into a large buffer - just in case they exceed
their allowed length. */
for (x = 0; x < 15; x++) {
fputc(buffer[x], pointer);
}
/* This loop copies the individual characters to the file, one by one. */
fputc('\0', pointer); /* Finally, we make sure the string's terminated */
}
/* Each record is precisely 16 bytes in length, so we're able to leap to the
start of any particular one by multiplying its number by 16. */
if (fclose(pointer) != 0) {
printf("File could not be closed.\n");
}
printf("Reading file:\n");
if ((pointer = fopen("<C$Dir>.datafile", "r")) == 0) {
printf("File could not be opened for reading.\n");
return;
}
do {
do {
printf("Please enter a number from 1 to 5 to see that record:\n");
printf("(Enter 0 to leave the program)\n");
scanf("%d",&x);
while (getchar() != '\n'); /* This 'cleans' the input of scanf() */
if (x == 0) break;
if (x < 1 || x > 5) {
printf("Sorry - that number was out of range.\n");
}
} while (x < 1 || x > 5);
/* The above do-while loop prompts the user for a number between one and five,
and control will only leave the loop once a suitable number's been entered.
There is a special condition; when x == 0, the loop is terminated and
the load operation is skipped over. */
if (x != 0) {
if (fseek(pointer, (x-1) * 16, SEEK_SET) != 0) {
printf("fseek() failed to change position.\n");
return;
}
fgets(buffer, 17, pointer);
/* The above command loads up to 17-1 characters from the file given by
'pointer' and puts them in 'buffer', writing a null byte at the end of
the string. */
puts(buffer);
printf("\n");
}
} while (x != 0);
/* Last but not least, we close the file! */
if (fclose(pointer) != 0) {
printf("File could not be closed after reading.\n");
}
} 00000000 2f 2a 20 43 20 66 6f 72 20 59 6f 75 72 73 65 6c |/* C for Yoursel|
00000010 66 20 2d 20 41 63 6f 72 6e 20 55 73 65 72 20 4a |f - Acorn User J|
00000020 75 6c 79 20 31 39 39 35 0a 20 20 20 44 65 6d 6f |uly 1995. Demo|
00000030 6e 73 74 72 61 74 69 6f 6e 20 6f 66 20 72 61 6e |nstration of ran|
00000040 64 6f 6d 20 61 63 63 65 73 73 20 66 69 6c 65 20 |dom access file |
00000050 68 61 6e 64 6c 69 6e 67 0a 20 20 20 62 79 20 53 |handling. by S|
00000060 74 65 76 65 20 4d 75 6d 66 6f 72 64 20 2a 2f 0a |teve Mumford */.|
00000070 0a 20 20 20 23 69 6e 63 6c 75 64 65 20 3c 73 74 |. #include <st|
00000080 64 69 6f 2e 68 3e 0a 0a 76 6f 69 64 0a 6d 61 69 |dio.h>..void.mai|
00000090 6e 28 76 6f 69 64 29 0a 7b 0a 20 20 20 46 49 4c |n(void).{. FIL|
000000a0 45 20 20 2a 70 6f 69 6e 74 65 72 3b 0a 20 20 20 |E *pointer;. |
000000b0 63 68 61 72 20 20 62 75 66 66 65 72 5b 32 35 35 |char buffer[255|
000000c0 5d 3b 0a 20 20 20 69 6e 74 20 20 20 78 2c 20 6c |];. int x, l|
000000d0 6f 6f 70 3b 0a 0a 20 20 20 70 72 69 6e 74 66 28 |oop;.. printf(|
000000e0 22 52 61 6e 64 6f 6d 20 41 63 63 65 73 73 20 66 |"Random Access f|
000000f0 69 6c 65 20 68 61 6e 64 6c 69 6e 67 5c 6e 22 29 |ile handling\n")|
00000100 3b 0a 20 20 20 70 72 69 6e 74 66 28 22 2d 2d 2d |;. printf("---|
00000110 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
00000120 2d 2d 2d 2d 2d 2d 2d 2d 5c 6e 5c 6e 22 29 3b 0a |--------\n\n");.|
00000130 20 20 20 70 72 69 6e 74 66 28 22 43 72 65 61 74 | printf("Creat|
00000140 69 6e 67 20 66 69 6c 65 2e 2e 2e 5c 6e 5c 6e 22 |ing file...\n\n"|
00000150 29 3b 0a 0a 20 20 20 69 66 20 28 28 70 6f 69 6e |);.. if ((poin|
00000160 74 65 72 20 3d 20 66 6f 70 65 6e 28 22 3c 43 24 |ter = fopen("<C$|
00000170 44 69 72 3e 2e 64 61 74 61 66 69 6c 65 22 2c 20 |Dir>.datafile", |
00000180 22 77 22 29 29 20 3d 3d 20 30 29 20 7b 0a 20 20 |"w")) == 0) {. |
00000190 20 70 72 69 6e 74 66 28 22 46 69 6c 65 20 63 6f | printf("File co|
000001a0 75 6c 64 20 6e 6f 74 20 62 65 20 6f 70 65 6e 65 |uld not be opene|
000001b0 64 20 66 6f 72 20 77 72 69 74 69 6e 67 2e 5c 6e |d for writing.\n|
000001c0 22 29 3b 0a 20 20 20 72 65 74 75 72 6e 3b 0a 20 |");. return;. |
000001d0 20 20 7d 0a 0a 20 20 20 70 72 69 6e 74 66 28 22 | }.. printf("|
000001e0 50 6c 65 61 73 65 20 65 6e 74 65 72 20 35 20 73 |Please enter 5 s|
000001f0 74 72 69 6e 67 73 20 6f 66 20 31 35 20 63 68 61 |trings of 15 cha|
00000200 72 61 63 74 65 72 73 20 6f 72 20 6c 65 73 73 3a |racters or less:|
00000210 5c 6e 5c 6e 22 29 3b 0a 20 20 20 70 72 69 6e 74 |\n\n");. print|
00000220 66 28 22 28 4c 6f 6e 67 65 72 20 73 74 72 69 6e |f("(Longer strin|
00000230 67 73 20 77 69 6c 6c 20 62 65 20 74 72 75 6e 63 |gs will be trunc|
00000240 61 74 65 64 29 5c 6e 22 29 3b 0a 0a 20 20 20 66 |ated)\n");.. f|
00000250 6f 72 20 28 6c 6f 6f 70 20 3d 20 31 3b 20 6c 6f |or (loop = 1; lo|
00000260 6f 70 20 3c 3d 20 35 3b 20 6c 6f 6f 70 20 2b 2b |op <= 5; loop ++|
00000270 29 20 7b 0a 20 20 20 20 20 20 66 6f 72 20 28 78 |) {. for (x|
00000280 20 3d 20 30 3b 20 78 20 3c 3d 20 31 35 3b 20 78 | = 0; x <= 15; x|
00000290 2b 2b 29 20 7b 0a 20 20 20 20 20 20 20 20 20 62 |++) {. b|
000002a0 75 66 66 65 72 5b 78 5d 20 3d 20 27 5c 30 27 3b |uffer[x] = '\0';|
000002b0 0a 20 20 20 20 20 20 7d 0a 0a 2f 2a 20 54 68 65 |. }../* The|
000002c0 20 61 62 6f 76 65 20 6c 6f 6f 70 20 63 6c 65 61 | above loop clea|
000002d0 72 73 20 74 68 65 20 73 74 72 69 6e 67 20 61 72 |rs the string ar|
000002e0 72 61 79 20 62 79 20 69 6e 64 69 76 69 64 75 61 |ray by individua|
000002f0 6c 6c 79 20 66 69 6c 6c 69 6e 67 20 69 74 73 20 |lly filling its |
00000300 66 69 72 73 74 0a 20 20 20 66 65 77 20 65 6c 65 |first. few ele|
00000310 6d 65 6e 74 73 20 77 69 74 68 20 6e 75 6c 6c 20 |ments with null |
00000320 62 79 74 65 73 2e 20 2a 2f 0a 20 20 20 0a 20 20 |bytes. */. . |
00000330 20 20 20 20 70 72 69 6e 74 66 28 22 50 6c 65 61 | printf("Plea|
00000340 73 65 20 65 6e 74 65 72 20 73 74 72 69 6e 67 20 |se enter string |
00000350 6e 75 6d 62 65 72 20 25 64 3a 5c 6e 22 2c 20 6c |number %d:\n", l|
00000360 6f 6f 70 29 3b 0a 20 20 20 20 20 20 67 65 74 73 |oop);. gets|
00000370 28 62 75 66 66 65 72 29 3b 0a 0a 2f 2a 20 54 68 |(buffer);../* Th|
00000380 65 20 75 73 65 72 27 73 20 73 74 72 69 6e 67 20 |e user's string |
00000390 69 73 20 63 6f 70 69 65 64 20 69 6e 74 6f 20 61 |is copied into a|
000003a0 20 6c 61 72 67 65 20 62 75 66 66 65 72 20 2d 20 | large buffer - |
000003b0 6a 75 73 74 20 69 6e 20 63 61 73 65 20 74 68 65 |just in case the|
000003c0 79 20 65 78 63 65 65 64 0a 20 20 20 74 68 65 69 |y exceed. thei|
000003d0 72 20 61 6c 6c 6f 77 65 64 20 6c 65 6e 67 74 68 |r allowed length|
000003e0 2e 20 2a 2f 0a 20 20 20 0a 20 20 20 20 20 20 66 |. */. . f|
000003f0 6f 72 20 28 78 20 3d 20 30 3b 20 78 20 3c 20 31 |or (x = 0; x < 1|
00000400 35 3b 20 78 2b 2b 29 20 7b 0a 20 20 20 20 20 20 |5; x++) {. |
00000410 20 20 20 66 70 75 74 63 28 62 75 66 66 65 72 5b | fputc(buffer[|
00000420 78 5d 2c 20 70 6f 69 6e 74 65 72 29 3b 0a 20 20 |x], pointer);. |
00000430 20 20 20 20 7d 0a 0a 2f 2a 20 54 68 69 73 20 6c | }../* This l|
00000440 6f 6f 70 20 63 6f 70 69 65 73 20 74 68 65 20 69 |oop copies the i|
00000450 6e 64 69 76 69 64 75 61 6c 20 63 68 61 72 61 63 |ndividual charac|
00000460 74 65 72 73 20 74 6f 20 74 68 65 20 66 69 6c 65 |ters to the file|
00000470 2c 20 6f 6e 65 20 62 79 20 6f 6e 65 2e 20 2a 2f |, one by one. */|
00000480 0a 0a 20 20 20 20 20 20 66 70 75 74 63 28 27 5c |.. fputc('\|
00000490 30 27 2c 20 70 6f 69 6e 74 65 72 29 3b 20 2f 2a |0', pointer); /*|
000004a0 20 46 69 6e 61 6c 6c 79 2c 20 77 65 20 6d 61 6b | Finally, we mak|
000004b0 65 20 73 75 72 65 20 74 68 65 20 73 74 72 69 6e |e sure the strin|
000004c0 67 27 73 20 74 65 72 6d 69 6e 61 74 65 64 20 2a |g's terminated *|
000004d0 2f 0a 20 20 20 7d 0a 0a 2f 2a 20 45 61 63 68 20 |/. }../* Each |
000004e0 72 65 63 6f 72 64 20 69 73 20 70 72 65 63 69 73 |record is precis|
000004f0 65 6c 79 20 31 36 20 62 79 74 65 73 20 69 6e 20 |ely 16 bytes in |
00000500 6c 65 6e 67 74 68 2c 20 73 6f 20 77 65 27 72 65 |length, so we're|
00000510 20 61 62 6c 65 20 74 6f 20 6c 65 61 70 20 74 6f | able to leap to|
00000520 20 74 68 65 0a 20 20 20 73 74 61 72 74 20 6f 66 | the. start of|
00000530 20 61 6e 79 20 70 61 72 74 69 63 75 6c 61 72 20 | any particular |
00000540 6f 6e 65 20 62 79 20 6d 75 6c 74 69 70 6c 79 69 |one by multiplyi|
00000550 6e 67 20 69 74 73 20 6e 75 6d 62 65 72 20 62 79 |ng its number by|
00000560 20 31 36 2e 20 2a 2f 0a 0a 20 20 20 69 66 20 28 | 16. */.. if (|
00000570 66 63 6c 6f 73 65 28 70 6f 69 6e 74 65 72 29 20 |fclose(pointer) |
00000580 21 3d 20 30 29 20 7b 0a 20 20 20 20 20 20 70 72 |!= 0) {. pr|
00000590 69 6e 74 66 28 22 46 69 6c 65 20 63 6f 75 6c 64 |intf("File could|
000005a0 20 6e 6f 74 20 62 65 20 63 6c 6f 73 65 64 2e 5c | not be closed.\|
000005b0 6e 22 29 3b 0a 20 20 20 7d 0a 0a 20 20 20 70 72 |n");. }.. pr|
000005c0 69 6e 74 66 28 22 52 65 61 64 69 6e 67 20 66 69 |intf("Reading fi|
000005d0 6c 65 3a 5c 6e 22 29 3b 0a 0a 20 20 20 69 66 20 |le:\n");.. if |
000005e0 28 28 70 6f 69 6e 74 65 72 20 3d 20 66 6f 70 65 |((pointer = fope|
000005f0 6e 28 22 3c 43 24 44 69 72 3e 2e 64 61 74 61 66 |n("<C$Dir>.dataf|
00000600 69 6c 65 22 2c 20 22 72 22 29 29 20 3d 3d 20 30 |ile", "r")) == 0|
00000610 29 20 7b 0a 20 20 20 20 20 20 70 72 69 6e 74 66 |) {. printf|
00000620 28 22 46 69 6c 65 20 63 6f 75 6c 64 20 6e 6f 74 |("File could not|
00000630 20 62 65 20 6f 70 65 6e 65 64 20 66 6f 72 20 72 | be opened for r|
00000640 65 61 64 69 6e 67 2e 5c 6e 22 29 3b 0a 20 20 20 |eading.\n");. |
00000650 20 20 20 72 65 74 75 72 6e 3b 0a 20 20 20 7d 0a | return;. }.|
00000660 20 20 20 64 6f 20 7b 0a 20 20 20 20 20 20 64 6f | do {. do|
00000670 20 7b 0a 20 20 20 20 20 20 20 20 20 70 72 69 6e | {. prin|
00000680 74 66 28 22 50 6c 65 61 73 65 20 65 6e 74 65 72 |tf("Please enter|
00000690 20 61 20 6e 75 6d 62 65 72 20 66 72 6f 6d 20 31 | a number from 1|
000006a0 20 74 6f 20 35 20 74 6f 20 73 65 65 20 74 68 61 | to 5 to see tha|
000006b0 74 20 72 65 63 6f 72 64 3a 5c 6e 22 29 3b 0a 20 |t record:\n");. |
000006c0 20 20 20 20 20 20 20 20 70 72 69 6e 74 66 28 22 | printf("|
000006d0 28 45 6e 74 65 72 20 30 20 74 6f 20 6c 65 61 76 |(Enter 0 to leav|
000006e0 65 20 74 68 65 20 70 72 6f 67 72 61 6d 29 5c 6e |e the program)\n|
000006f0 22 29 3b 0a 20 20 20 20 20 20 20 20 20 73 63 61 |");. sca|
00000700 6e 66 28 22 25 64 22 2c 26 78 29 3b 0a 20 20 20 |nf("%d",&x);. |
00000710 20 20 20 20 20 20 77 68 69 6c 65 20 28 67 65 74 | while (get|
00000720 63 68 61 72 28 29 20 21 3d 20 27 5c 6e 27 29 3b |char() != '\n');|
00000730 20 2f 2a 20 54 68 69 73 20 27 63 6c 65 61 6e 73 | /* This 'cleans|
00000740 27 20 74 68 65 20 69 6e 70 75 74 20 6f 66 20 73 |' the input of s|
00000750 63 61 6e 66 28 29 20 2a 2f 0a 20 20 20 20 20 20 |canf() */. |
00000760 20 20 20 69 66 20 28 78 20 3d 3d 20 30 29 20 62 | if (x == 0) b|
00000770 72 65 61 6b 3b 0a 20 20 20 20 20 20 20 20 20 69 |reak;. i|
00000780 66 20 28 78 20 3c 20 31 20 7c 7c 20 78 20 3e 20 |f (x < 1 || x > |
00000790 35 29 20 7b 0a 20 20 20 20 20 20 20 20 20 20 20 |5) {. |
000007a0 20 70 72 69 6e 74 66 28 22 53 6f 72 72 79 20 2d | printf("Sorry -|
000007b0 20 74 68 61 74 20 6e 75 6d 62 65 72 20 77 61 73 | that number was|
000007c0 20 6f 75 74 20 6f 66 20 72 61 6e 67 65 2e 5c 6e | out of range.\n|
000007d0 22 29 3b 0a 20 20 20 20 20 20 20 20 20 7d 0a 20 |");. }. |
000007e0 20 20 20 20 20 7d 20 77 68 69 6c 65 20 28 78 20 | } while (x |
000007f0 3c 20 31 20 7c 7c 20 78 20 3e 20 35 29 3b 0a 0a |< 1 || x > 5);..|
00000800 2f 2a 20 54 68 65 20 61 62 6f 76 65 20 64 6f 2d |/* The above do-|
00000810 77 68 69 6c 65 20 6c 6f 6f 70 20 70 72 6f 6d 70 |while loop promp|
00000820 74 73 20 74 68 65 20 75 73 65 72 20 66 6f 72 20 |ts the user for |
00000830 61 20 6e 75 6d 62 65 72 20 62 65 74 77 65 65 6e |a number between|
00000840 20 6f 6e 65 20 61 6e 64 20 66 69 76 65 2c 0a 20 | one and five,. |
00000850 20 20 61 6e 64 20 63 6f 6e 74 72 6f 6c 20 77 69 | and control wi|
00000860 6c 6c 20 6f 6e 6c 79 20 6c 65 61 76 65 20 74 68 |ll only leave th|
00000870 65 20 6c 6f 6f 70 20 6f 6e 63 65 20 61 20 73 75 |e loop once a su|
00000880 69 74 61 62 6c 65 20 6e 75 6d 62 65 72 27 73 20 |itable number's |
00000890 62 65 65 6e 20 65 6e 74 65 72 65 64 2e 0a 20 20 |been entered.. |
000008a0 20 54 68 65 72 65 20 69 73 20 61 20 73 70 65 63 | There is a spec|
000008b0 69 61 6c 20 63 6f 6e 64 69 74 69 6f 6e 3b 20 77 |ial condition; w|
000008c0 68 65 6e 20 78 20 3d 3d 20 30 2c 20 74 68 65 20 |hen x == 0, the |
000008d0 6c 6f 6f 70 20 69 73 20 74 65 72 6d 69 6e 61 74 |loop is terminat|
000008e0 65 64 20 61 6e 64 0a 20 20 20 74 68 65 20 6c 6f |ed and. the lo|
000008f0 61 64 20 6f 70 65 72 61 74 69 6f 6e 20 69 73 20 |ad operation is |
00000900 73 6b 69 70 70 65 64 20 6f 76 65 72 2e 20 2a 2f |skipped over. */|
00000910 0a 0a 20 20 20 20 20 20 69 66 20 28 78 20 21 3d |.. if (x !=|
00000920 20 30 29 20 7b 0a 20 20 20 20 20 20 20 20 20 69 | 0) {. i|
00000930 66 20 28 66 73 65 65 6b 28 70 6f 69 6e 74 65 72 |f (fseek(pointer|
00000940 2c 20 28 78 2d 31 29 20 2a 20 31 36 2c 20 53 45 |, (x-1) * 16, SE|
00000950 45 4b 5f 53 45 54 29 20 21 3d 20 30 29 20 7b 0a |EK_SET) != 0) {.|
00000960 20 20 20 20 20 20 20 20 20 20 20 20 70 72 69 6e | prin|
00000970 74 66 28 22 66 73 65 65 6b 28 29 20 66 61 69 6c |tf("fseek() fail|
00000980 65 64 20 74 6f 20 63 68 61 6e 67 65 20 70 6f 73 |ed to change pos|
00000990 69 74 69 6f 6e 2e 5c 6e 22 29 3b 0a 20 20 20 20 |ition.\n");. |
000009a0 20 20 20 20 20 20 20 20 72 65 74 75 72 6e 3b 0a | return;.|
000009b0 20 20 20 20 20 20 20 20 20 7d 0a 20 20 20 20 20 | }. |
000009c0 20 0a 20 20 20 20 20 20 20 20 20 66 67 65 74 73 | . fgets|
000009d0 28 62 75 66 66 65 72 2c 20 31 37 2c 20 70 6f 69 |(buffer, 17, poi|
000009e0 6e 74 65 72 29 3b 0a 0a 2f 2a 20 54 68 65 20 61 |nter);../* The a|
000009f0 62 6f 76 65 20 63 6f 6d 6d 61 6e 64 20 6c 6f 61 |bove command loa|
00000a00 64 73 20 75 70 20 74 6f 20 31 37 2d 31 20 63 68 |ds up to 17-1 ch|
00000a10 61 72 61 63 74 65 72 73 20 66 72 6f 6d 20 74 68 |aracters from th|
00000a20 65 20 66 69 6c 65 20 67 69 76 65 6e 20 62 79 0a |e file given by.|
00000a30 20 20 20 27 70 6f 69 6e 74 65 72 27 20 61 6e 64 | 'pointer' and|
00000a40 20 70 75 74 73 20 74 68 65 6d 20 69 6e 20 27 62 | puts them in 'b|
00000a50 75 66 66 65 72 27 2c 20 77 72 69 74 69 6e 67 20 |uffer', writing |
00000a60 61 20 6e 75 6c 6c 20 62 79 74 65 20 61 74 20 74 |a null byte at t|
00000a70 68 65 20 65 6e 64 20 6f 66 0a 20 20 20 74 68 65 |he end of. the|
00000a80 20 73 74 72 69 6e 67 2e 20 2a 2f 0a 0a 20 20 20 | string. */.. |
00000a90 20 20 20 20 20 20 70 75 74 73 28 62 75 66 66 65 | puts(buffe|
00000aa0 72 29 3b 0a 20 20 20 20 20 20 20 20 20 70 72 69 |r);. pri|
00000ab0 6e 74 66 28 22 5c 6e 22 29 3b 0a 20 20 20 20 20 |ntf("\n");. |
00000ac0 20 7d 0a 20 20 20 7d 20 77 68 69 6c 65 20 28 78 | }. } while (x|
00000ad0 20 21 3d 20 30 29 3b 0a 0a 2f 2a 20 4c 61 73 74 | != 0);../* Last|
00000ae0 20 62 75 74 20 6e 6f 74 20 6c 65 61 73 74 2c 20 | but not least, |
00000af0 77 65 20 63 6c 6f 73 65 20 74 68 65 20 66 69 6c |we close the fil|
00000b00 65 21 20 2a 2f 0a 0a 20 20 20 69 66 20 28 66 63 |e! */.. if (fc|
00000b10 6c 6f 73 65 28 70 6f 69 6e 74 65 72 29 20 21 3d |lose(pointer) !=|
00000b20 20 30 29 20 7b 0a 20 20 20 20 20 20 70 72 69 6e | 0) {. prin|
00000b30 74 66 28 22 46 69 6c 65 20 63 6f 75 6c 64 20 6e |tf("File could n|
00000b40 6f 74 20 62 65 20 63 6c 6f 73 65 64 20 61 66 74 |ot be closed aft|
00000b50 65 72 20 72 65 61 64 69 6e 67 2e 5c 6e 22 29 3b |er reading.\n");|
00000b60 0a 20 20 20 7d 0a 7d |. }.}|
00000b67 
.