How can I divide each Block into 4kb?

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Hello everyone.. I need a C implementation for FILE divides into blocks and Each Block divides into 4KB. How can I divide the block into fixed size (i.e 4kb).. Please anyone give me solution for my problem.... I need C implementation..
Thank you...

Posted 16-Feb-15 20:14pm

Member 11449136

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Sergey Alexandrovich Kryukov 17-Feb-15 1:50am

Huh?
—SA

Member 11449136 17-Feb-15 1:53am

what is it mean???

enhzflep 17-Feb-15 1:59am

That's exactly what "Huh?" means.

Sergey Alexandrovich Kryukov 17-Feb-15 2:04am

Sorry for confusing you. It means a general question, interjection: it's not clear what you are even talking about.
—SA

Kornfeld Eliyahu Peter 17-Feb-15 2:05am

It means that your question is not a question at all!!!
Each block of what? What happens if you can't slice your 'what' into blocks of 4 Kb each?
And also: What have you tried?[^]

Member 11449136 17-Feb-15 2:09am

okk got it.. I have to divide a file into fixed size block and block size is 4KB... AND AFTER THAT COMPUTE HASH VALUE ON IT.. I HAVE TO CREATE C PROGRAM FOR FIXED LENGHT CHUNKING....

Kornfeld Eliyahu Peter 17-Feb-15 2:24am

OK, now its clearer about your goal, but What have you tried?[^]

Member 11449136 17-Feb-15 2:37am

I have to implement this- In fixed sized chunking i.e-- all files need to be partitioned into blocks with a fixed size for ex. 4kbytes and use MD5 or SHA-1 to calculate the hash value of all the chunks as their identifiers. During the process of hash comparison, once a same hash is found, consider the chunk as redundancy: otherwise, store the chunk and its hash.

Kornfeld Eliyahu Peter 17-Feb-15 2:39am

So you have done nothing...I'm sorry but I will do the same...

Member 11449136 17-Feb-15 2:42am

So please tell me how can I do this.. If you will do the same

Sergey Alexandrovich Kryukov 17-Feb-15 2:27am

Also, it would be good to know what "divide" means. Creating several files out of one, or reading by chunks or anything else. And what's the purpose of it?
—SA

Member 11449136 17-Feb-15 2:37am

I have to implement this- In fixed sized chunking i.e-- all files need to be partitioned into blocks with a fixed size for ex. 4kbytes and use MD5 or SHA-1 to calculate the hash value of all the chunks as their identifiers. During the process of hash comparison, once a same hash is found, consider the chunk as redundancy: otherwise, store the chunk and its hash.

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Sergey Alexandrovich Kryukov · Accepted Answer · 2015-02-16T20:33:00

This is what you need:
http://www.cplusplus.com/reference/cstdio/fread[^],
http://www.cplusplus.com/reference/cstdio/fopen[^],
http://www.cplusplus.com/reference/cstdio/fclose[^].

And, if you also need to read your data chunks in other files, you may need this: http://www.cplusplus.com/reference/cstdio/fwrite[^].

I referenced some help pages from C++ help, but don't be confused: it is also applicable to C.

—SA