C Interview Questions

1. Write a program in C to find the 3*3 matrix multiplication.

2. Write a program in C to find the complex number of a given number.

3. how to print all the combinations of a given integer.

4. what is the significance of following functions

• freopen()
• strtok()
• access()
• state()

5. what is the "escape hatch" provided by #pragma directive?

6. what is source code of this tringle ...
A
A N I
A N I R B
A N I R B A N
A N I R B A N P A
A N I R B A N P A U L

7. What happens when you overload the stack?

8. what do you mean by preprocessor directory?

9. What is byte offset of a field within a structure?

10. What is unabridged list?

11. How is structure passing and returning implemented?

12. Write sample code or algorithim to get all possible combinations of data that will be entered from keyboard.

13. Explian Floyd Cycle finding algorithm for circular link list?

14. Why is that a pointer is depicted by '*' in C?

15. Write a program to print an 2D array in spiral manner

16. #includevoid fun(int);void main(){ inta; a=3; fun(a); }void fun(int){ if(n>0) { fun(--n);...

17. Given the values of two nodes in a *binary search tree*, write a cprogram to find the lowest common ancestor.

18. Can we define an array without any constant expression? If Yes, How?

19. For what purpose pragma.h header file is used?

20. What is the advantage of zero filling in calloc() ?