This document contains 32 technical interview questions for experienced C programmers. The questions cover a range of C programming concepts including functions, dynamic memory allocation, pointers, structures, call by value vs call by reference, input/output functions, random number generation, header files, storage specifiers, typecasting, control structures, file operations, storage classes, sorting algorithms, and linking programs to operating systems. The document also provides the address of Vestino Technologies in Chennai, India.

1. Vestino Technologies
No:173, Tecci park, Block-A, 4th floor, Sholinganallur, Chennai - 600 119
‘C’ INTERVIEW QUESTIONS FOR EXPERIENCED
1. How is a Function declared in C Language?
2. What is Dynamic Memory allocation? Mention the syntax.
3. What do you mean by Dangling Pointer Variable in C Programming?
4. Where can we not use &(address operator in C)?
5. Write a simple example of a structure in C Language
6. Differentiate between call by value and call by reference.
7. Differentiate between getch() and getche().
8. Explain toupper() with an example.
9. Write a code to generate random numbers in C Language.
10. Can I create a customized Head File in C language?
11. What do you mean by Memory Leak?
12. Explain Local Static Variables and what is their use?
13. What is the difference between declaring a header file with < > and ” “?
14. When should we use the register storage specifier?
15. Which statement is efficient and why? x=x+1; or x++; ?
16. Can I declare the same variable name to the variables which have different
scopes?
17. Which variable can be used to access Union data members if the Union variable
is declared as a pointer variable?
18. Mention File operations in C Language.
19. What are the different storage class specifiers in C?
20. What is typecasting?
21. Write a C program to print hello world without using a semicolon (;).
22. Write a program to swap two numbers without using the third variable.

2. Vestino Technologies
No:173, Tecci park, Block-A, 4th floor, Sholinganallur, Chennai - 600 119
23. How can you print a string with the symbol % in it?
24. Write a code to print the following pattern.
25. Explain the # pragma directive.
26. How can you remove duplicates in an array?
27. What is Bubble Sort Algorithm? Explain with a program.
28. What is Round-robin algorithm? Write a code for Round Robin Scheduling.
29. Which structure is used to link the program and the operating system?
30. What are the limitations of scanf() and how can it be avoided?
31. Differentiate between the macros and the functions.
32. Suppose a global variable and local variable have the same name. Is it is possible
to access a global variable from a block where local variables are defined?