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extol.c: add error checking for fopen

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Intel A80486DX2-66 2024-03-09 12:09:57 +03:00
parent 988389a6ea
commit 4ae64ebf95
Signed by: 80486DX2-66
GPG Key ID: 83631EF27054609B
1 changed files with 6 additions and 1 deletions
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7
c-programming/jokes/extol.c
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@ -31,7 +31,12 @@ extol (FILE *f)
if (f == NULL) if (f == NULL)
{ {
FILE *fs = fopen ("extol.txt", "a+"); FILE *fs = fopen (EXTOL_FILE_NAME, "a+");
if (fs == NULL)
{
perror ("fopen");
exit (EXIT_FAILURE);
}
fseek (fs, 0L, SEEK_END); fseek (fs, 0L, SEEK_END);
result = extol (fs); result = extol (fs);
for (result <<= 4, result &= ~15; (result & 15) != 15; result++) for (result <<= 4, result &= ~15; (result & 15) != 15; result++)