C FAQs - C Questions and Answers

This page on C FAQs covers very useful C questions and answers. These FAQs are very useful and frequently asked in interviews as well as in viva.

Following is the list of top 10 C FAQs

1. Explain scope of static variable with axample.

2. Difference between operator n++ and ++n.

3. Explain difference between structure and union with example.

4. Can more variables be passed to main function? If so how?

5. Explain the difference between pass by value and pass by reference.

6. What is the difference between malloc and calloc functions in C?

7. Declare and define double dimensional array. Write the same with the use of pointers.

8. Program to know the entered number is prime or not.

9. Program to swap two numbers without using third variable.

10. What is volatile variable and how it is different than normal C variable?

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