fread

I'm working on a mailbox project, and I have these two structures: struct mmbox_mail struct mmbox_mail { char *sender, *recipient; char *obj, *date; char flags; size_t size; }; and mail_t typedef struct{ struct mmbox_mail info; void *body; void *next; } mail_t; I cannot modify the structures' fields, because I need variable data (for this purpose I used char* instead of char[]). Each mail_t structure is a mail. I need to save every mail of a user in a file, that could be binary or text file (but I think it's better with a binary file, because I have the void* body that is difficult to save in

Can anyone tell me how to get a array of bytes into a structure in a direct fashion in C# .NET version 2? Like the familiar fread as found in C, so far I have not had much success in reading a stream of bytes and automatically filling a structure. I have seen some implementations where there is pointer hocus-pocus in the managed code by using the unsafe keyword. Have a look at this sample: public unsafe struct foobarStruct{ /* fields here... */ public foobarStruct(int nFakeArgs){ /* Initialize the fields... */ } public foobarStruct(byte[] data) : this(0) { unsafe { GCHandle hByteData =

Can someone clarify what the APNs (Apple Push Notification) wants as far as how you query it? The docs say it starts sending as soon as the connection is made. Does this mean that I don't do an fread() on it? Here's my current code to try and read it. I did NOT put the fread() in a loop as I do not know what response indicates "no more records to read" and I didn't want an infinite loop on my server. <?php $apnsCert = 'HOHRO-prod.pem'; $streamContext = stream_context_create(); stream_context_set_option($streamContext, 'ssl', 'local_cert', $apnsCert); stream_context_set_option($streamContext,

The declaration of fread is as following: size_t fread(void *ptr, size_t size, size_t nmemb, FILE *stream); The question is: Is there a difference in reading performance of two such calls to fread : char a[1000]; fread(a, 1, 1000, stdin); fread(a, 1000, 1, stdin); Will it read 1000 bytes at once each time? There may or may not be any difference in performance. There is a difference in semantics. fread(a, 1, 1000, stdin); attempts to read 1000 data elements, each of which is 1 byte long. fread(a, 1000, 1, stdin); attempts to read 1 data element which is 1000 bytes long. They're different

There seem to be of the order of 10 questions and (mostly) successful answers solving segmentation faults cause by misused fread()'s in C. That being said, I am having such a problem but have not found a solution. I have a binary file containing an int (call it nbins ) and an array of float s (of size nbins ). When I try to read this file, it successfully opens and points to the file handle, but then gives a segmentation fault error when reading the nbins int . Here is a minimal example: #include <stdio.h> #include <stdlib.h> #include <string.h> #define BPATH "/path/to/file" int main(int agrc,