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C Programming Interview Questions and Answers Technical Interview Questions and Answers

C Language Pointer Interview Questions and Answers For Freshers Part-12

April 20, 2016 S0 Comments

25. How does free() know how much memory to release? There’s no standard way. It can vary from compiler to compiler, even from version to version of the same compiler. free(), malloc(), calloc(), and realloc() are functions; as long as…

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C Programming Interview Questions and Answers Technical Interview Questions and Answers

C Language Pointer Interview Questions and Answers For Freshers Part-11

April 20, 2016 S0 Comments

23. What is a “null pointer assignment” error? What are bus errors, memory faults, and core dumps? These are all serious errors, symptoms of a wild pointer or subscript. Null pointer assignment is a message you might get when an…

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C Programming Interview Questions and Answers Technical Interview Questions and Answers

C Language Pointer Interview Questions and Answers For Freshers Part-10

April 20, 2016 S0 Comments

21. What happens if you free a pointer twice? If you free a pointer, use it to allocate memory again, and free it again, of course it’s safe If you free a pointer, the memory you freed might be reallocated.…

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C Programming Interview Questions and Answers Technical Interview Questions and Answers

C Language Pointer Interview Questions and Answers For Freshers Part-9

April 20, 2016 S0 Comments

19. What is the stack? A “stack trace” is a list of which functions have been called, based on this information. When you start using a debugger, one of the first things you should learn is how to get a…

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C Programming Interview Questions and Answers Technical Interview Questions and Answers

C Language Pointer Interview Questions and Answers For Freshers Part-8

April 20, 2016 S0 Comments

17. What is the difference between far and near ? Compilers for PC compatibles use two types of pointers. near pointers are 16 bits long and can address a 64KB range. far pointers are 32 bits long and can address…

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C Programming Interview Questions and Answers Technical Interview Questions and Answers

C Language Pointer Interview Questions and Answers For Freshers Part-7

April 20, 2016 S0 Comments

15. Is it better to use malloc() or calloc()? Both the malloc() and the calloc() functions are used to allocate dynamic memory. Each operates slightly different from the other. malloc() takes a size and returns a pointer to a chunk…

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C Programming Interview Questions and Answers Technical Interview Questions and Answers

C Language Pointer Interview Questions and Answers For Freshers Part-6

April 20, 2016 S0 Comments

13. When would you use a pointer to a function? Pointers to functions are interesting when you pass them to other functions. A function that takes function pointers says, in effect, “Part of what I do can be customized. Give…

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C Programming Interview Questions and Answers Technical Interview Questions and Answers

C Language Pointer Interview Questions and Answers For Freshers Part-5

April 20, 2016 S0 Comments

9. Is NULL always equal to 0(zero)? The answer depends on what you mean by “equal to.” If you mean “compares equal to,” such as if ( /* … */ ) { p = NULL; } (62)

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C Programming Interview Questions and Answers Technical Interview Questions and Answers

C Language Pointer Interview Questions and Answers For Freshers Part-4

April 20, 2016 S0 Comments

7. Can you subtract pointers from each other? Why would you? If you have two pointers into the same array, you can subtract them. The answer is the number of elements between the two elements. (63)

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C Programming Interview Questions and Answers Technical Interview Questions and Answers

C Language Pointer Interview Questions and Answers For Freshers Part-3

April 20, 2016 S0 Comments

5. What is a void pointer? A void pointer is a C convention for “a raw address.” The compiler has no idea what type of object a voidpointer “really points to.” If you write (83)

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