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

C Interview Questions

Questions Answers Views Company eMail

Write a program that takes a 5 digit number and calculates 2 power that number and prints it.

TCS, Vimukti Technologies,

5 11325

5) Write a program that takes a 3 digit number n and finds out whether the number 2^n + 1 is prime, or if it is not prime find out its factors.without using big int and exponential function

TCS,

1 4312

Why is the code below functioning. According to me it MUST NOT.

1 3723

write a program in C to swap two variables

Attrabyte, Marlabs,

7 11788

mplementation of stack using any programing language

Marlabs,

1 4248

How to find the usage of memory in a c program

Infosys,

1 5341

How can you print HELLO WORLD without using "semicolon"?

HCL, Infosys,

7 11421

struct node { int *a; char *b; char array[12]; }; struct node m,*n; assign the value in *a,*b,char array[12]

3 6981

Write a program that takes a 3 digit number n and finds out whether the number 2^n + 1 is prime, or if it is not prime find out its factors

3 5867

Write a program that takes a 5 digit number and calculates 2 power that number and prints it

7 8667

I was asked to write a program in c which when executed displays how many no.of clients are connected to the server.

2372

what will be the output off the following program? #include int main() { int a; a=015+0*71+5; printf("%d,a"); return0; }

HCL,

9 12667

change to postfix a/(b+c*d-e)

Value Labs,

8 10271

write a method for an array in which it can display the largest n next largest value.

Value Labs,

1 4676

write a program to find the largest and second largest integer from an array

Value Labs,

2 9629

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Un-Answered Questions { C }

What is pass by reference in functions?

848

What is a newline escape sequence?

1105

What is the use of in c?

1030

What is meant by errors and debugging?

1110

how can I convert a string to a number?

1084

What is a pointer and how it is initialized?

1161

What is static volatile in c?

1024

What is header file in c?

1072

List some of the static data structures in C?

1202

What are the types of type qualifiers in c?

1090

How can I find the modification date and time of a file?

1085

How many types of arrays are there in c?

1049

What is an endless loop?

1279

How many types of sorting are there in c?

1059

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

2183

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