Date: Wed, 31 Jan 2001 21:31:30 +0100 From: "Theo van Klaveren" <t.vanklaveren@student.utwente.nl> To: <freebsd-questions@FreeBSD.org> Subject: Printf question Message-ID: <FHEHJFHKDJMJCKHHPLFGEEMFCCAA.t.vanklaveren@student.utwente.nl>
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Hello,
I have a small(?) question about printf. If I have a struct with two 64-bit
integers, defined as follows:
typedef struct _smbfind_result {
uint64_t r_id;
uint64_t c_id;
.
.
} smbfind_result;
Now, let's take for example res->r_id=1 and res->c_id=255676. The following
statement:
printf ("result (result %ld, cid %ld)\n",
res->r_id, res->c_id);
Outputs "result (result 1, cid 0)", whereas the following:
printf ("result (result %ld, cid %ld)\n",
(long)res->r_id, (long)res->c_id);
Outputs "result (result 1, cid 255676)", which is of course the correct
answer. Why are the typecasts required? One would say the %ld would require
printf() to format correctly, which it doesn't. Am I mixing types or
something?
Please CC me as I am not subscribed to -questions.
Theo van Klaveren <t.vanklaveren@student.utwente.nl>
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