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C Interview Questions
Questions Answers Views Company eMail

Write a C++ program to generate 10 integer numbers between - 1000 and 1000, then store the summation of the odd positive numbers in variable call it sum_pos, then find the maximum digit in this variable regardless of its digits length.

1166

Write a programe print the sum of series 0,1,2,.....10

7 4472

what is the output of the below code? main( ) { printf ( "\nOnly stupids use C?" ) ; display( ) ; } display( ) { printf ( "\nFools too use C!" ) ; main( ) ; }

3 7209

1. What is the output of printf("%d") 2. What will happen if I say delete this 3. Difference between "C structure" and "C++ structure". 4. Diffrence between a "assignment operator" and a "copy constructor" 5. What is the difference between "overloading" and "overridding"? 6. Explain the need for "Virtual Destructor". 7. Can we have "Virtual Constructors"? 8. What are the different types of polymorphism? 9. What are Virtual Functions? How to implement virtual functions in "C" 10. What are the different types of Storage classes? 11. What is Namespace? 12. What are the types of STL containers?. 13. Difference between "vector" and "array"? 14. How to write a program such that it will delete itself after exectution? 15. Can we generate a C++ source code from the binary file? 16. What are inline functions? 17. Talk sometiming about profiling? 18. How many lines of code you have written for a single program? 19. What is "strstream" ? 20. How to write Multithreaded applications using C++? 21. Explain "passing by value", "passing by pointer" and "passing by reference" 22. Write any small program that will compile in "C" but not in "C++" 23. Have you heard of "mutable" keyword? 24. What is a "RTTI"? 25. Is there something that I can do in C and not in C++? 26. Why preincrement operator is faster than postincrement? 27. What is the difference between "calloc" and "malloc"? 28. What will happen if I allocate memory using "new" and free it using "free" or allocate sing "calloc" and free it using "delete"? 29. What is Memory Alignment? 30. Explain working of printf. 31. Difference between "printf" and "sprintf". 32. What is "map" in STL? 33. When shall I use Multiple Inheritance? 34. What are the techniques you use for debugging? 35. How to reduce a final size of executable? 36. Give 2 examples of a code optimization.

2 3310

write a program whose output will be- 1 12 123 1234

10 21646

accept character from keyboard untill the user presses the enter key.If the user enters any character other than upper case(A-Z)alphabets program should stop taking any input

1 2055

Please write me a program to print the first 50 prime numbers (NOT between the range 1 -50)

IBM, KJH,

5 40965

I need a help with a program: Write a C program that uses data input in determining the whole of points A and a whole of circles B. Find two points in A so that the line which passes through them, cut through the maximum number of circles.

TCS,

1093

Can anyone help me with this please? Need to print the below values.. Thanks 1 1 2 1 2 3 1 2 3 4

3 2747

logic for x=y^n

Delphi,

1 2655

what is the difference between procedure oriented and object oriented progaming language

1 2080

hello freinds next week my interview in reliance,nybody has an idea about it intervew questions..so tell

Reliance,

1215

which is the best site or book for learning C...and i need the content for C..how to get the good programming skills....? can plz suggest me....

2 3246

Write a program to show the workingof auto variable.

Infotech,

2 3698

what is the program to display your name in any color?

HCL,

2 3300


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Un-Answered Questions { C }

Is c# a good language?

192


How many bytes are occupied by near, far and huge pointers (dos)?

226


Why c is known as a mother language?

213


Explain low-order bytes.

257


What is static and volatile in c?

190






Is c is a procedural language?

224


program for reversing a selected line word by word when multiple lines are given without using strrev

1531


define string ?

231


Is it possible to pass an entire structure to functions?

206


What are the types of macro formats?

240


What is the use of structure padding in c?

204


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.

3794


Where register variables are stored in c?

170


Which of these functions is safer to use : fgets(), gets()? Why?

211


What is cohesion and coupling in c?

195