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

C Interview Questions

Questions Answers Views Company eMail

what is the difference between. system call and library function?

CDAC, Satyam,

2 20318

struct ptr { int a; char b; int *p; }abc; what is d sizeof structure without using "sizeof" operator??

Verifone,

9 15757

what is diff b/w huge & far & near pointer??

HCL,

1 4307

write a function for strtok()??

Verifone,

2 10201

what is the output of the following program and explain the answer #include exp() { main(5) } main(int a) { printf("%d",a); return; }

Satyam,

3 7035

what is difference b/w extern & volatile variable??

Teleca,

6 14931

what is the differnce between programing langauge and tool? is sas is a programing langauge r tool?

Gamesa, Satyam,

2322

design and implement a program that reads floating-points numbers in a sentinel-controlled loop until the user terminates the program by entering zero.your program should determinate and print the smallest,largest and average of the supplied numbers.

2 6106

i want to have a program to read a string and print the frequency of each character and it should work in turbo c

Persistent, Wipro,

3 9101

here is a link to download Let_Us_C_-_Yashwant_Kanetkar

Microsoft,

3 11170

How do you write a program which produces its own source code as its output?

2 5509

what is the importance of spanning tree?

1980

How to reverse a string using a recursive function, with swapping?

5 8771

How to Clear last bit if it 1 using Macro TURN_OFF_BIT_LAST

Adobe, Huawei,

6 11583

what is pointer

TCS,

1 5000

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Un-Answered Questions { C }

Iam a B.Tech graduate and completed my engineering in 2009, from 2005 to 2009 and after that i had done nothing.Now i want to do job and get into BPO field . Friends give me suggestions as what to say in interview... if they ask me that what would you had done ... these many years without doing job ??????? pls urgent

1787

why do some people write if(0 == x) instead of if(x == 0)?

1025

What is nested structure?

1012

What does struct node * mean?

982

What is typedef struct in c?

1006

Differentiate between a structure and a union.

1241

What is use of pointer?

1024

a c variable cannot start with a) an alphabet b) a number c) a special symbol d) both b and c above

1189

Explain the process of converting a Tree into a Binary Tree.

2625

What is dangling pointer in c?

1158

How many header files are in c?

1002

What are # preprocessor operator in c?

1061

In c language can we compile a program without main() function?

1079

If jack lies on Mon, Tue Wed and jill lies on Thursday, Friday and Saturday. If both together tell they lied yesterday. So c the given options and then c cos in the given dates one will be saying the truth and one will be lying. I got Thursday as option because jack is saying the truth he lied yest but jill is lying again as he lies on that day.

2227

What are compound statements?

1097

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