30 Programming C
Interview Questions

1. What have you done in the past year to become a better programmer?

2. Why was the C programming language so important?

   Community Answers

   • "Very low language, you can huge access to the memory."
   • "Because c is object oriented programming language."
   • "What is dangling pointer in c?what is wild pointer in c? give example."
   • "It is easy language, low level language."

3. What is hashing?

4. What are static functions? What is their use?

5. What is pointer to an array? Explain with example.

6. Is a default case necessary in a switch statement?

   Community Answers

   • "Yes, because you can't cover all cases. U can do nothing but you need to tell that what you want."
   • "It's not necessary because default case will only run if all cases are dismissed."
   • "Is a default case necessary in a switch statement?"

7. What is Dangling pointer?

8. Should variables be stored in local blocks?

   Community Answers

   • "It may be usually not only in the rare condition it will be done."
   • "Is a default case necessary in a switch statement?"
   • "In any case it should be stored in the most local block that cover the use of the variable. Remember to free it if neccesart."
   • "The use of local blocks for storing variables is unusual and therefore should be avoided, with only rare exceptions. One of these exceptions would be for debugging purposes, when you might want to declare a local instance of a global variable to test within your function. You also might want to use a local block when you want to make your program more readable in the current context."
   • "The use of local blocks for storing variables is unusual and therefore should be avoided, with only rare exceptions. One of these exceptions would be for debugging purposes, when you might want to declare a local instance of a global variable to test within your function. You also might want to use a local block when you want to make your program more readable in the current context."

9. What is the significance of EOF?

   Community Answers

   • "•It simply indicates that the end of file has been reached then the reading should be terminated."

10. If we add a element to the last of a sorted sequence. Then which of the sorting method will be most efficient to sort the new sequence?

11. What are your career goals?

12. What is wild pointer in c?

13. What is NULL pointer?

14. What is scope of a variable? How are variables scoped in C?

15. How can you tell whether a loop ended prematurely?

    Community Answers

    • "What are merits and demerits of array in C?"
    • "It depends upon the variable what we are using."
    • "Add a print of the counter."

16. Who created the C programming language?

17. Write a C program for all possible combinations of letters in a word?

18. Do you enjoy problem solving?

19. What is the difference between declaration and definition of a variable/function?

20. What are merits and demerits of array in c?

    Community Answers

    • "Merits: (a) We can easily access each element of array. (b) Not necessity to declare two many variables. (c) Array elements are stored in continuous memory location. Demerit: (a) Wastage of memory space. We cannot change size of array at the run time. (b) It can store only similar type of data."

21. Can you read complex pointer declaration?

22. Where do you see yourself in 5 years?

23. Why should we hire you?

24. What does static variable mean?

25. What is C language?

26. What is the most efficient way to store flag values?

27. What is a local block?

28. Why programming?

29. How will you find the number of occurrences of a particular string in the given input string?

30. Why do we need different types of pointers when it occupies the same memory space for any type of pointers?