C Interview Questions
Questions Answers Views Company eMail

24.what is a void pointer? 25.why arithmetic operation can’t be performed on a void pointer? 26.differentiate between const char *a; char *const a; and char const *a; 27.compare array with pointer? 28.what is a NULL pointer? 29.what does ‘segmentation violation’ mean? 30.what does ‘Bus Error’ mean? 31.Define function pointers? 32.How do you initialize function pointers? Give an example? 33.where can function pointers be used?

2 7736

34.what are bitwise shift operators? 35.what are bit fields? What is the use of bit fields in a structure declaration? 36.what is the size of an integer variable? 37.what are the files which are automatically opened when a c file is executed? 38.what is the little endian and big endian? 39.what is the use of fflush() function? 40.what is the difference between exit() and _exit() functions? 41.where does malloc() function get the memory? 42.what is the difference between malloc() and calloc() function? 43.what is the difference between postfix and prefix unary increment operators?

3 3794

44.what is the difference between strcpy() and memcpy() function? 45.what is output of the following statetment? 46.Printf(“%x”, -1<<4); ? 47.will the program compile? int i; scanf(“%d”,i); printf(“%d”,i); 48.write a string copy function routine? 49.swap two integer variables without using a third temporary variable? 50.how do you redirect stdout value from a program to a file? 51.write a program that finds the factorial of a number using recursion?


6 6677

52.write a “Hello World” program in “c” without using a semicolon? 53.Give a method to count the number of ones in a 32 bit number? 54.write a program that print itself even if the source file is deleted? 55.Given an unsigned integer, find if the number is power of 2?

Solartis, TCS, Datamatics, ThinkBox, Trine,

25 40993

Given an array A[n+m] of n+m numbers, where A[1] ... A[n] is sorted and A[n+1] ... A[n+m] is sorted. Design a linear time algorithm to obtain A[1...n+m] sorted using only O(1) extra space. Time Complexity of your algorithm should be O(n) and Space Complexity O(1).


What is meant by int fun const(int a, int b) { .... ... }

1 3496

How can I get Single byte from 'int' type variable? Can we alter single bit or multiple bits in int type variable? if so, How?

2 5075

Can we access RAM? How? Whats the range of access? Similarly What are other hardware we can access?

1 2190

Which command is more efficient? *(ptr+1) or ptr[1]

3 3882

Function to find the given number is a power of 2 or not?

nvidia, Motorola,

20 31567

Program to write some contents into a file using file operations with proper error messages.

2 3217

how to find that no is int or float?

5 5191

can we access one file to one directory?

1 2206

will u give me old quesrion papers for aptitude for L & t info tech?

L&T, Hindustan,

1 3761

Here is alphabets : abcdefgh 1) how to reverse. as hgfedcba 2) after reversal, how to group them in a pair hg fe dc ba.

2 4148

Post New C Questions

Un-Answered Questions { C }

please explain clearly about execution of c program in detail,in which stage are the printf sacnf getting into exeecutable code


how to write optimum code to divide a 50 digit number with a 25 digit number??


How to draw the flowchart for structure programs?


Write a C/C++ program to add a user to MySQL. The user should be permitted to only "INSERT" into the given database.


Write a program in "C" to calculate the root of a quadratic equation ax^2+bx+c=0, where the value of a,b & c are known.


what is associativity explain what is the precidence for * and & , * and ++ how the folloing declaration work 1) *&p; 2) *p++;


what are the program that using a two dimensional array that list the odd numbers and even numbers separately in a given 10 inputs values


write a programe to accept any two number and check the following condition using goto state ment.if a>b,print a & find whether it is even or odd and then print.and a


in iso what are the common technological language?


What is the code for 3 questions and answer check in VisualBasic.Net?


void main(){ int a; a=1; while(a-->=1) while(a-->=0); printf("%d",a); }


C language questions for civil engineering


application attempts to perform an operation?


a single linked list consists of nodes a to z .print the nodes in reverse order from z to a using recursion


ATM machine and railway reservation class/object diagram