Programming :: Reading A Binary File Which Is In Hexadecimal
Jan 9, 2011
I have a binary file, which I need to process using my C++ application. Only thing I know is first chunk of the file is long, second chunk is int, third chunk is char etc... The binary file actually contains something like below. (which is represented in hex base).
D7 07 00 00 00 00 00 00 37 18 00 00 DE 07 ............ so on.....
I need to procees the file in the following way.
* I know the first data segment in my file is long. So it takes 4 bytes.
* so I need to read the first four bytes. That is D7 07 00 00.
* Then I need to reverse this as 00 00 07 D7.
* Finally I need to get the decimal value of above hexa decimal line. ( 00 00 07 D7)
* i.e. 00 00 07 D7 (in hex) = 7D7 (in hex- after removing leading 0 s) = 2007 (in decimal)
Like wise I need to process the whole file.
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Jan 12, 2011
I need to read a binary file using my C++ application. That binary file may contain arbitary characters and it also contains 0 at some places. I need to read the file without considering null terminating character. (i.e. considering 0 as a normal byte and not as the end of the string)Can some one suggest me a method to read the buffer while ignoring the null terminated character.
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Aug 25, 2010
Design, debug and test a C program that uses Gray Code for decoding information stored in a binary file. Gray Code G(A)of any value A can be easily produced from unsigned binary B(A) using the expression: G(A) = B(A) ^ ( B(A) >> 1 ) (1) The formula may be used to generate coding tables. For example for 4-bit codes:
Table 1. Coding table
Hex Value Binary Gray
0 0000 0000
1 0001 0001
2 0010 0011
[code]....
If the first option is selected, your program shall prompt the user to enter the file name and open the specified file. In this assignment you can presume that the file size is always limited to 64 bytes. If the file is not found, the program shall display a message: File not found and display the menu, so the user can enter file name correctly or exit the program.
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May 5, 2011
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Feb 18, 2010
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Aug 11, 2010
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Apr 15, 2011
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Jul 14, 2010
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Code:
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Dec 7, 2010
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i read the file with this script in java:
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[Code]...
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Feb 14, 2011
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Jul 24, 2010
Code:
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Oct 20, 2010
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Feb 10, 2011
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declare -a a
declare -a b
r=` awk '{n++} END {print n}' second.txt `
echo $r
awk '
{
[Code]....
Actually I have two data files one of them contains 44406 and the other one has 12066 rows and I want to check whether the difference between the components of two specific columns is less than a threshod but I have simplified it here. I had written this code and then I have realized that this code just goes through the number of rows as the same as the first.txt file and ignores the rest. I could not find the problem yet.
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Code:
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Nov 8, 2010
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Code:
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Code:
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[code]....
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5
12
[code]....
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Dec 2, 2010
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Code:
if [ -s f_test.txt ] && [ -f f_test.txt ]; then
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Dec 9, 2010
how to program in bash, an i have a problem, i am trying compare values in between 2 values (from another file), so far my solution is to make a nested for loop, but that causes it to compare every value. Here is a visulization of what i want
file.a 2,3,4,5
file.b
3 5
[code]...
i want the values 2, 3, 4, 5 from file.a to be compared inbetween values 3 5, 6 9,1 2, 4 7 from file.b (var1 is the value im comparing, var2 is the less value, var 3 is the greater value)
for i in $var1
do
for k in $var2
do
[code]....
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Code:
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DIR *d;
dirent *de;
[code]....
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Apr 7, 2010
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[Code].....
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Jan 6, 2010
I am trying to do this:
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3. read line2 in the cvs file and repeat the process
4. Do above for all lines in the cvs file
for example:
file1.cvs content:
text1,text2,text3,"text 4"
a1,a2,3,"a 4"
file.txt content:
some text $array1$ some text
some text $array2$ some text
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Can above be accomplished in BASH and how?
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Feb 3, 2010
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May 30, 2010
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