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

C Interview Questions

Questions Answers Views Company eMail

To what value are pointers initialized? 1) NULL 2) Newly allocated memory 3) No action is taken by the compiler to initialize pointers.

Aricent,

4 9629

Which of the following sorts is quickest when sorting the following set: 1 2 3 5 4 1) Quick Sort 2) Bubble Sort 3) Merge Sort

7 16466

Which of the following data structures is on average the fastest for retrieving data: 1) Binary Tree 2) Hash Table 3) Stack

3 13572

Evaluate the following: int fn(int v) { if(v==1 || v==0) return 1; if(v%2==0) return fn(v/2)+2; else return fn(v-1)+3; } for fn(7); 1) 10 2) 11 3) 1

6 20076

What character terminates all strings composed of character arrays? 1) 0 2) . 3) END

3 7882

True or false: If you continuously increment a variable, it will become negative? 1) True 2) False 3) It depends on the variable type

7 16157

Which of the following is not a valid declaration for main ()? 1) int main() 2) int main(int argc, char *argv[]) 3) They both work

2 12968

Which is not valid in C? 1) class aClass{public:int x;} 2) /* A comment */ 3) char x=12;

7 10891

void swap(int a,int b) { a=a+b; b=a-b; a=a-b; } in this code always gives the same result for all case

Accenture, TCS,

9 18506

if a five digit number is input through the keyboard, write a program to calculate the sum of its digits. (hint:-use the modulus operator.'%')

23 79883

in iso what are the common technological language?

2063

Write a program or provide a pseudo code to flip the 2nd bit of the 32 bit number ! (Phone Screen)

NetApp, PTU, Wipro,

1 6883

what is the diff b/w static and non static variables in C. Give some examples plz.

Wipro,

3 14168

Add 2 64 bit numbers on a 32 bit machine

EMC, Hyderabad Central University, NetApp,

3 17433

Write a program to accept a character & display its corrosponding ASCII value & vice versa?

9 37940

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Un-Answered Questions { C }

main() { printf("hello"); fork(); }

1161

What is the meaning of c in c language?

1098

What is int main () in c?

1039

What does static variable mean in c?

1072

What header files do I need in order to define the standard library functions I use?

1015

#include #include struct stu { int i; char j; }; union uni { int i; char j; }; void main() { int j,k; clrscr(); struct stu s; j=sizeof(s); printf("%d",j); union uni u; k=sizeof(u); printf("%d",k); getch(); } what is value of j and k.

6223

What is the use of the function in c?

985

When I set a float variable to, say, 3.1, why is printf printing it as 3.0999999?

1011

please explain every phase in the "SDLC" in the dotnet.

2567

What is ambagious result in C? explain with an example.

2562

write a program in c language to print your bio-data on the screen by using functions.

6749

Once I have used freopen, how can I get the original stdout (or stdin) back?

1048

What are header files why are they important?

1058

Explain what is the difference between null and nul?

1097

What is the difference between mpi and openmp?

1232

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