C Language

Arrays Question & Answer

Question : 1

Difference between arrays and linked list?

Answer :

An array is a repeated pattern of variables in contiguous storage. A linked list is a set of structures scattered through memory, held together by pointers in each element that point to the next element. With an array, we can (on most architectures) move from one element to the next by adding a fixed constant to the integer value of the pointer. With a linked list, there is a ―next‖ pointer in each structure which says what element comes next.

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Question : 2

Difference between strdup and strcpy?

Answer :

Both copy a string. strcpy wants a buffer to copy into. strdup allocates a buffer using malloc().

Unlike strcpy(), strdup() is not specified by ANSI .

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Question : 3

What is the difference between Strings and Arrays?

Answer :

String is a sequence of characters ending with NULL .it can be treated as a one dimensional array of characters terminated by a NULL character.

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