Comments on: Project 2: Multiple Data Compression and Encryption using Iterative Technique https://www.emblogic.com/blog/10/project-2-multiple-data-compression-and-encryption-using-iterative-technique/ Embedded System and ARM Training Mon, 07 Oct 2013 04:00:03 +0000 hourly 1 http://wordpress.org/?v=3.9.1 By: samta https://www.emblogic.com/blog/10/project-2-multiple-data-compression-and-encryption-using-iterative-technique/#comment-3274 Mon, 31 Dec 2012 09:01:12 +0000 http://emblogic.org/blog/?p=5430#comment-3274 #Implemented scull
with the structures
struct scull_qset
{
char **qdata;
struct scull_qset *next;
};
struct scull_dev
{
int rows, cols;
struct scull_qset *data;
};

**used linked lists and double pointers

]]> By: samta https://www.emblogic.com/blog/10/project-2-multiple-data-compression-and-encryption-using-iterative-technique/#comment-3272 Mon, 31 Dec 2012 05:53:08 +0000 http://emblogic.org/blog/?p=5430#comment-3272 completed Q2 of linked lists
and stacks assignment

working on scull

]]> By: samta https://www.emblogic.com/blog/10/project-2-multiple-data-compression-and-encryption-using-iterative-technique/#comment-3270 Sun, 30 Dec 2012 04:02:19 +0000 http://emblogic.org/blog/?p=5430#comment-3270 Implemented
#basics of link lists i.e. creation,insertion,deleteion
#assignment questions on linked lists i.e. questions 1,4,5,9,8…

]]> By: amritpreet singh https://www.emblogic.com/blog/10/project-2-multiple-data-compression-and-encryption-using-iterative-technique/#comment-3268 Fri, 28 Dec 2012 11:58:04 +0000 http://emblogic.org/blog/?p=5430#comment-3268 succesfully implemented linked list with following operations:-
->creation
->addition at start
->addition at end
->addition in mid
->deletiom at start
->deletion in mid
->deletion at end
->display

]]> By: samta https://www.emblogic.com/blog/10/project-2-multiple-data-compression-and-encryption-using-iterative-technique/#comment-3262 Thu, 27 Dec 2012 10:11:00 +0000 http://emblogic.org/blog/?p=5430#comment-3262 completed
#assignment on file operators
issues::
1)in union assignment cleared the issue on unions by using union n{int a;short int b[2]
}; was having problem earlier as the two short int were pointing to the same memory location…but nw [0] and b[1] nt pointg to same location
2)purpose of fflsuh still unclear
3)nt clear with openg a binary file using fopen()

]]> By: amritpreet singh https://www.emblogic.com/blog/10/project-2-multiple-data-compression-and-encryption-using-iterative-technique/#comment-3261 Wed, 26 Dec 2012 19:37:40 +0000 http://emblogic.org/blog/?p=5430#comment-3261 studied dirent.h but still not clear………..dont know what is stat, s_isdir. s_isreg

]]> By: amritpreet singh https://www.emblogic.com/blog/10/project-2-multiple-data-compression-and-encryption-using-iterative-technique/#comment-3260 Wed, 26 Dec 2012 19:05:24 +0000 http://emblogic.org/blog/?p=5430#comment-3260 completed
# n-bit general code for compression decompression using file and pointers.
# assignment on structure(problem in two questions).
# assignment on union(problem in 1 question.)

issues:-
1.don’t know how to use enum
2.found the code to identify the processors endianess….but didnt understand
3. did not understand how to create directories, subdirectories and file in those directories using c program.

]]> By: samta https://www.emblogic.com/blog/10/project-2-multiple-data-compression-and-encryption-using-iterative-technique/#comment-3256 Wed, 26 Dec 2012 10:17:50 +0000 http://emblogic.org/blog/?p=5430#comment-3256 Completed
#n bit compression using pointers and files
#assignment on structures

issues::
facing issues while working with union…created a union m{int a;unsigned int b,c;
}; size fo union is 4 but i m unable to assign values to unsigned int b,c

]]> By: samta https://www.emblogic.com/blog/10/project-2-multiple-data-compression-and-encryption-using-iterative-technique/#comment-3249 Sun, 23 Dec 2012 16:03:32 +0000 http://emblogic.org/blog/?p=5430#comment-3249 completed
#Question no.1-7 of assignment low level file opertions
#Q-1 and Q-2 of structures assignment
**issues::
1)resolved the issue of creating a new file with different permision with the help of S_IRUSR etc flags.

2)facing a problem in reading directories from subdirectories..the directories from current directories are being detected by S_ISDIR but all the files inside the subdirectories are being detected by S_ISDIR as directories..

]]> By: amritpreet singh https://www.emblogic.com/blog/10/project-2-multiple-data-compression-and-encryption-using-iterative-technique/#comment-3248 Sun, 23 Dec 2012 12:58:49 +0000 http://emblogic.org/blog/?p=5430#comment-3248 implemented
# general code for compression & decompression for n-bit.
# completed all assignments before structures

]]> By: Amardeep singh https://www.emblogic.com/blog/10/project-2-multiple-data-compression-and-encryption-using-iterative-technique/#comment-3244 Sun, 23 Dec 2012 10:20:56 +0000 http://emblogic.org/blog/?p=5430#comment-3244 i hv completed general code for compression of 2,3,4,5,6,7 bit.

]]> By: anil rajak https://www.emblogic.com/blog/10/project-2-multiple-data-compression-and-encryption-using-iterative-technique/#comment-3242 Fri, 21 Dec 2012 07:18:49 +0000 http://emblogic.org/blog/?p=5430#comment-3242 i had completed project 01…

]]> By: samta https://www.emblogic.com/blog/10/project-2-multiple-data-compression-and-encryption-using-iterative-technique/#comment-3241 Thu, 20 Dec 2012 17:12:18 +0000 http://emblogic.org/blog/?p=5430#comment-3241 #completed
functions assignment
**issues faced
1)gets() function doesnt work properly while working in a loop starts taking \n
2)found that it isnt possible to store the return value from a function into a const
**resolved 1) by
while(!strcmp(s,””)||!strcmp(s,”\n”))
gets(s);

]]> By: samta https://www.emblogic.com/blog/10/project-2-multiple-data-compression-and-encryption-using-iterative-technique/#comment-3235 Wed, 19 Dec 2012 16:59:13 +0000 http://emblogic.org/blog/?p=5430#comment-3235 #completed
1)mdc project for n bit compression and decompression using arrays and files..
2)class assignment:created a mycp command which functions like cp to copy one file into another.
**issues faced
on hw to call the command mycp srcfle destifile without doing ./mycp
**resolved
copied the executable file in one of the paths
**Doubt
The new file which was created by default doesnt have read permission….had to do chmod 700 then access the new desti file….why is this so?

]]> By: pravin bhalerao https://www.emblogic.com/blog/10/project-2-multiple-data-compression-and-encryption-using-iterative-technique/#comment-3230 Wed, 19 Dec 2012 08:33:13 +0000 http://emblogic.org/blog/?p=5430#comment-3230 i had completed project 01 mdc.

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