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

C Interview Questions

Questions Answers Views Company eMail

How to reverse a linked list

Aricent, Fidelity, IBM, TCS,

1 6600

1. Write a C program to count the number of occurrence of a specific word in the given strings. (for e.g. Find how many times the word “live” comes in the sentence “Dream as if you’ll live forever, live as if you’ll die today ”)

Eskom, TCS,

12 75813

write a c program to store and print name,address,roll.no of a student using structures?

7 71206

Write a C program to remove the repeated characters in the entered expression or in entered characters(i.e) removing duplicates

3 8881

Reverse the bit order in a single macro. eg. i/p = 10010101 --> o/p = 10101001

2 6412

implement NAND gate logic in C code without using any bitwise operatior.

Alcatel,

4 32641

implement OR gate without using any bitwise operator.

Alcatel, Wipro,

1 5790

Is the below things valid & where it will be stored in memory layout ? static const volatile int i; register struct { } ; static register;

Lucent,

2 5298

in one file global variable int i; is declared as static. In another file it is extern int i=100; Is this valid ?

Infosys, NetApp,

4 8274

what is difference between C and C++

4 7357

which is faster execution: loops or recursion?

3 6918

#include #include void main() {clrscr(); char another='y'; int num; for(;another=='y';) { printf("Enter a number"); scanf("%d",&num); printf("squre of %d is %d",num,num*num); printf("\nwant to enter another number y/n"); scanf("%c",&another); } getch(); } the above code runs only one time.on entering 'y' the screen disappeares.what can i do?

3 7683

Simplify the program segment if X = B then C ← true else C ← false

2960

what is computer

4 5937

we compile c program in 32 processor and 64 bit processor .exe file is created in both the processors. if we want to run .exe file in 64 bit processor which is created in 32 bit processor. is that .exe file is run or not if it is not run why?

HP, Wipro,

4 8354

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Un-Answered Questions { C }

How can I delete a file?

1016

Is int a keyword in c?

906

What are the features of c language?

1022

How can I read in an object file and jump to locations in it?

989

Why is c called a mid-level programming language?

1153

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

2561

main use of recursive function a) processing speed high b) reduce program length/reduce repeated statements c) if you do not, use iterative methods like, for, while or do-while d) all the above

1043

What is queue in c?

1034

How would you use the functions fseek(), freed(), fwrite() and ftell()?

1104

What is the use of printf() and scanf() functions?

1069

What is a pointer in c plus plus?

1218

What are identifiers and keywords in c?

1033

GIVEN A FLOATING POINT NUMBER HOW IS IT ACTUALLY STORED IN MEMORY ? CAN ANYONE EXPLAIN?? THE 32 BIT REPRESENTATION OF A FLOATING POINT NUMBER ALLOTS: 1 BIT-SIGN 8 BITS-EXPONENT 23 BITS-MANTISSA

1834

what do you mean by inline function in C?

1008

the portion of a computer program within which the definition of the variable remains unchanged a) mode b) module c) scope d) none

1000

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