20 Frequently Asked C Interview Questions

20 Frequently Asked C Interview Questions

1. What is the difference between #include and #include “file”?
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2 What is hashing?
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3. What is the quickest sorting method to use?
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4. How can you determine the size of an allocated portion of memory?
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5. Why should we assign NULL to the elements (pointer) after freeing them?
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6. What is a “null pointer assignment” error? What are bus errors, memory faults, and core dumps?
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7. When should a type cast be used?
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8. What is a null pointer?
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9. How can I convert a string to a number?
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10. What is the stack?
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11. How do you print an address?
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12. What is Preprocessor?
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13. What is the heap?
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14. How do you use a pointer to a function?
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15. What is the purpose of main( ) function?
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16. What is the easiest sorting method to use?
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17. Is it better to use a macro or a function?
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18. What is a pragma?
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19. What is static memory allocation and dynamic
memory allocation?
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20. How are pointer variables initialized?
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