C Interview Questions
Questions Answers Views Company eMail

how to find a 5th bit is set in c program

IBM,

4 10539

write a c program to check weather a particluar bit is set or not?

IBM,

5 18900

program to get the remainder and quotant of given two numbers with out using % and / operators?

IBM, College School Exams Tests,

10 25573




can you explain in brief what is "r+" mode in a file... i know that it si used to read and modify rhe existing content.... but explalanation about the file pointer in "r+" mode i wann to know???????????

Cognizant,

2 2443

What is the difference b/w main() in C language and main() in C++.

7 5475

what will happen if you free a pointer twice after allocating memory dynamically ?

Novell,

3 8610

what is dangling pointer?

LG Soft,

1 3546

Can we write a program without main() function?

9 8688




What is the difference between null pointer and the void pointer?

3 6071

How many ways are there to swap two numbers without using temporary variable? Give the each logic.

9 14043

hat is a pointer?

Assurgent,

4 3016

how will you write a program on linked lists using JAVA programming???????????

Keane India Ltd,

1 1664

The purpose of this exercise is to benchmark file writing and reading speed. This exercise is divided into two parts. a). Write a file character by character such that the total file size becomes approximately >10K. After writing close the file handler, open a new stream and read the file character by character. Record both times. Execute this exercise at least 4 times b). Create a buffer capable of storing 100 characters. Now after generating the characters, first store them in the buffer. Once the buffer is filled up, store all the elements in the file. Repeat the process until the total file size becomes approximately >10K.While reading read a while line, store it in buffer and once buffer gets filled up, display the whole buffer. Repeat the exercise at least 4 times with different size of buffer (50, 100, 150 …). Records the times. c). Do an analysis of the differences in times and submit it in class.

799

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 " 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.

Cognos,

3190

what is the syallabus of computer science students in group- 1?

1048


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Un-Answered Questions { C }

what are non standard function in c

630


hi folks i m approching for h1 b interview on monday 8th of august at montreal and i m having little problem in my approval notice abt my bithdate my employer has made a mistake while applying it is 12th january and istead of that he had done 18 the of january do any body have any solution for that if yes how can i prove my visa officer abt my real birthdate it urgent please let me know guys thaks dipesh patel

670


Write a program to produce the following output: 1 2 3 4 5 6 7 8 9 10

9998


i have to apply for rbi before that i need to know the the syllabus for the entrance questions. whethet it may be aps or techinical

711


write an algorithm to display a square matrix.

1332






Write a program to maintain student’s record. Record should not be available to any unauthorized user. There are three (3) categories of users. Each user has its own type. It depends upon user’s type that which kind of operations user can perform. Their types and options are mentioned below: 1. Admin (Search Record [by Reg. No or Name], View All Records, Insert New Record, Modify Existing Record) 2. Super Admin (Search Record [by Reg. No or Name], View All Records, Insert New Record, Modify Existing Record, Delete Single Record) 3. Guest (Search Record [by Reg. No or Name], View All Records) When first time program runs, it asks to create accounts. Each user type has only 1 account (which means that there can be maximum 3 accounts). In account creation, following options are required: Login Name: <6-10 alphabets long, should be unique> Password: <6-10 alphabets long, should not display characters when user type> Confirm Password: Account Type: Login Name, Password and Account Type should be stored in a separate file in encrypted form. (Encryption means that actual information should be changed and Decryption means that Encrypted information is changed back to the actual information) If any of the above mentioned requirement(s) does not meet then point out mistake and ask user to specify information again. When Program is launched with already created accounts, it will ask for user name and password to authenticate. On successful authentication, give options according to the user’s type.

616


Without Computer networks, Computers will be half the use. Comment.

955


write a program in C that prompts the user for today's date,tomorrow's date and display the results.Use structures for today's date,tomorrow's date and an array to hold the days for each month of the year.

3919


we need to calculating INCOME TAX for the person. The INCOME TAX is as follows:- First $10000/- of income : 4% tax Next $10000/- of income : 8% tax Next $10000/- of income : 11.5% tax above $10, 00,00/- : 15% tax What is the Solution of this Question ?

26


what is the difference between class and unio?

1066


The postoder traversal is 7,14,3,55,22,5,17 Then ur Inorder traversal is??? please help me on this

1771


shorting algorithmS

903


write a C program: To recognize date of any format even formats like "feb-02-2003","02-february-2003",mm/dd/yy, dd/mm/yy and display it as mm/dd/yy.

2421


how do you programme Carrier Sense Multiple Access

779


why to assign a pointer to null sometimes??how can a pointer we declare get assigned with a garbage value by default???

653