let's take a code
struct FAQ
{
int a;
char b;
float c;
double d;
int a[10];
}*temp;
now explain me how the memory will be allocated for the
structure FAQ and what address will be in the structure
pointer (temp)....................
How to write a code for random pick from 1-1000 numbers?
The output should contain the 10 numbers from the range
1-1000 which should pick randomly, ie ,for each time we run
the code we should get different outputs.
WHICH TYPE OF JOBS WE GET BY WRITING GROUPS .WHEN THE EXAMS
CONDUCTED IS THIS EXAMS ARE CONDUCTED EVERY YEAR OR NOT.PLS
TELL ME THE ANSWER
90
what is the most appropriate way to write a multi-statement
macro?
8
Hi how many types of software editions are there and their
difference (like home editions, enterprise, standard etc)
can u please help me
49
1.What is a Data Structure? Explain its need?
2.What is a Directed Graph? Write an algorithm to find
whether a Directed Graph is connected or not?
3.Explain the process of converting a Tree to a Binary Tree.
C program to find all possible outcomes of a dice?
180
compare array with pointer?
14
How to draw the flowchart for structure programs?
248
The OS is a program that uses various data structures. Like
all programs in execution, you can determine the
performance and other behavior of the OS by inspecting its
state - the values stored in its data structures. In this
part of the assignment, we study some aspects of the
organization and behavior of a Linux system by observing
values of kernel data structures exposed through the /proc
virtual file system.
The /proc virtual file system:
Linux uses the /proc file system to collect information
from kernel data structures. The /proc implementation
provided with Linux can read many different kernel data
structures. If you cd to /proc on a Linux machine, you will
see a number of files and directories at that location.
Files in this directory subtree each corresponds to some
kernel data structure. The subdirectories with numeric
names contain virtual files with information about the
process whose process ID is the same as the directory name.
Files in /proc can be read like ordinary ASCII files. You
can open each file and read it using library routines such
as fgets() or fscanf(). The proc (5) manual page explains
the virtual files and their content available through
the /proc file system.
Requirements in detail:
In this part, you are asked to write a program to report
the behavior of the Linux kernel. Your program should run
in two different versions. The default version should print
the following values on stdout:
• Processor type
• Kernel version
• The amount of memory configured into this computer
• Amount of time since the system was last booted
A second version of the program should run continuously and
print lists of the following dynamic values (each value in
the lists is the average over a specified interval):
• The percentage of time the processor(s) spend in
user mode, system mode, and the percentage of time the
processor(s) are idle
• The amount and percentage of available (or free)
memory
• The rate (number of sectors per second) of disk
read/write in the system
• The rate (number per second) of context switches in
the kernel
• The rate (number per second) of process creations
in the system
If your program (compiled executable) is called proc_parse,
running it without any parameter should print out
information required for the first version. Running it with
two parameters "proc_parse <read_rate> <printout_rate>"
should print out information required for the second
version. read_rate represents the time interval between two
consecutive reads on the /proc file system. printout_rate
indicates the time interval over which the average values
should be calculated. Both read_rate and printout_rate are
in seconds. For instance, proc_parse 2 60 should read
kernel data structures once every two seconds. It should
then print out averaged kernel statistics once a minute
(average of 30 samples). The second version of your program
doesn't need to terminate.
Write a program which has the following seven functions.
The functions should be:
• main() this calls the other 6 functions
• fget_long() a function which returns a long data
type from a file
• fget_short() a function which returns a short
integer variable from a file
• fget_float() a function which returns a floating
point variable from a file
• fprt_long() a function which prints its single,
long argument into a file
• fprt_short() a function which prints its single,
short argument into a file
• fprt_float() a function which prints its single,
floating point argument into a file.
You should use fscanf() to get the values of the variables
from the input (the file) and fprintf() to print the values
to the other file. Pay attention to using the correct
format for each of the data types.
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