C Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

C Interview Questions

Questions Answers Views Company eMail

how can i include my own .h file EX:- alex.h like #include, rather than #include"alex.h"

1 3429

how i m write c program 1.check prime number 2.prime number series

1 3965

main() { int a,b; printf("%d,%d",scanf("%d%d",&a,&b)); } => do u mean above program's output... =>output will be:2,whatever you enter value for b. =>because scanf is a library fn which will return how many arguements it processes, and second value you are right mr.Satya but i found my self unable to understand that for the first time scanf returns the no of successful matches but how for the second time it returns the value of 'b'.while a function should return the same 'r' value every time.

Cisco,

1 8935

write a program which the o/p should b in such a way that s triangle if I/p is 3,a Square/rectangle if I/P=4,a pentagon if I/P=5 and so on...forget about the I/P which is less than 3

ADP,

2082

write a program to find lcm and hcf of two numbers??

1 5593

1. What will be the output of the following programs. a) #include Main() { Int x=4; While(x==1) { X=x-1; Printf(“%d”,x); --x; } }

CSC,

7 9761

what are threads ? why they are called light weight processes ? what is the relation between process and threads ?

1 3310

what is difference between userlevel threads and kernel level threads ?what are the trades offs between these two approaches ? what approach is most frequently used and why ?

1 5927

What is that continue statement??

4 5721

find the minimum of three values inputted by the user

3 6263

write a program that accepts 3 numbers from the user. dispaly the values in a descending order.

3 6623

Read the following data in two different files File A: aaaaaaaadddddddd bbbbbbbbeeeeeeee ccccccccffffffff File B: 11111111 22222222 33333333 By using the above files print the following output or write it in the Other file as follows aaaaaaaa11111111dddddddd bbbbbbbb22222222eeeeeeee cccccccc33333333ffffffffffff

3296

is forign key will be unique key any table or not?

2 4104

can we declare a variable in different scopes with different data types? answer in detail

TCS,

3 5405

An array name contains base address of the array. Can we change the base address of the array?

NMIMS, Wipro,

4 13778

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Un-Answered Questions { C }

Explain the difference between #include "..." And #include <...> In c?

1029

What do you mean by dynamic memory allocation in c?

1105

What are the key features in c programming language?

1076

How would you rename a function in C?

1046

write a c programming using command line argument,demonstrate set operation(eg;union,intersection,difference) example output is c:>setop 12 34 45 1 union 34 42 66 c:>setop 12 34 1 42 66 c:>setop 12 34 diff 12 56 67 78 setop 12 34

2187

What are qualifiers?

1051

Can you subtract pointers from each other? Why would you?

963

Explain the use of function toupper() with and example code?

1136

How can you increase the allowable number of simultaneously open files?

1162

What are the advantages of external class?

1071

how is the examination pattern?

2022

In c programming, explain how do you insert quote characters (? And ?) Into the output screen?

1246

Difference between exit() and _exit() function?

1139

What math functions are available for integers? For floating point?

1138

Write a program to check armstrong number in c?

1132

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