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Thread: What is far pointer in c ?

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    Far Pointer can address memory location which is not pointed by normal pointer

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    The far pointer is an 16 bit far pointers are a little slower a far pointer is a pointer which includes a segment selector, making it possible to point to addresses outside of the default segment.
    Syntax:
    char far*ptr;

  4. #4
    far pointer is a pointer which includes a segment selector, making it possible to point to addresses outside of the default segment.

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    Helo, You cannot point at a class, you can only point at an instance of a class, which is simply another term for an object. The class is essentially the object's type; it define's the object's behaviour, but is not the object in and of itself. The class also defines a pointer's type, so we can point at instances of a class and access the the object it represents through indirection.

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    When an address pointed to by a pointer is within the same segment, then it is a near pointer and therefore it requires only 2 bytes for offset. On the other hand, when a pointer points to an address which is out of the segment (that means in another segment), then that pointer is a far pointer.

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    So when an address pointed to by a pointer is within the same segment, then it is a near pointer and therefore it requires only 2 bytes for offset. On the other hand, when a pointer points to an address which is out of the segment (that means in another segment), then that pointer is a far pointer.

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    If the pointer points to the memory location in the same memory segment then it is called as near pointer .
    If the pointer points to the memory location in different memory segment then it is called as Far pointer.

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    The pointer basically holds addresses. So, when a pointer points to an address which is out of the segment (that means in another segment), then that pointer is a far pointer. It consist of 4 bytes: two for segment and two for offset.

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    Close pointer is utilized to store 16 bit tends to implies inside current fragment on a 16 bit machine. The constraint is that we can just access 64kb of information at any given moment. A far pointer is regularly 32 bit that can get to memory outside current section.

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    The far pointer is an 16 bit far pointers are a little more slowly a far suggestion is a suggestion such as a section selector, creating it possible to factor to details outside of the standard section.

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    Near pointer is used to store 16 bit addresses means within current segment on a 16 bit machine. The limitation is that we can only access 64kb of data at a time. A far pointer is typically 32 bit that can access memory outside current segment.

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