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Is Far pointer necessary to create a circular linked list?
It has to be a pointer all right.Regarding 'far' and 'near': forget it, simply use 'Large' data modell (or 'Huge').
What is far and near pointer and how are they used?
It is a matter of the memory model you are using. On old or embedded systems, some memory was outside of the range of a normal pointer. If you have 4 megs of ram you need at least a 22bit pointer to see all of it. But let's say you only have a 16 bit pointer. This means you can only access the first 65K of ram. Odd as it may sound, this was a problem on old computers, and is sometimes an issue on embedded devices with limited processing power. The near and far classifications were a solution. Pointers are near by default. In my example above, the 65K of ram would be accessed with a near pointer. To get past that 16 bit limit, you need a far pointer. Thus: memory within the pointer's range is near. Memory outside of the range is far. Near pointer: char near * ptr; Far pointer: char far * ptr;A far pointer uses both the segment and the offset address to point to a location in memory. A near pointer in contrast uses only the offset address and the default segment. The far pointer can point to any location in memory, whereas the near pointer can only point to a nearby local address.Something that was important 20 years ago. Now you can forget it.
Why you use an array of pointer to pointer?
because u freakin can
Use of double pointer?
A double pointer has two basic meanings. One is ofa pointer to a pointer, where changing the value ofdouble pointer will result in the original pointer being changed. Another is that of a two-dimentional array, such as a matrix, or a list of char* (e.g. in main when you use argv).
What is pointer why you use pointer?
Pointer is a variable that stores the address of another variable. Since pointer is also akind of variable, thus pointer itself will be stored at a different memory location.
What are near pointers in C language?
A near pointer is a 16 bit pointer in a 16 bit segmented memory architecture (now obsolete and archaic) that contains only the offset portion of the address of the object.
Difference between genric pointer and normal pointer?
Generic pointer of type 'void *' is compatible with any (data-)pointer, but you cannot use the following operators on it: + - ++ -- += -= * -> []
Why would you use a pointer to pointer a in aprogram?
A pointer to pointer has many uses, one of the simplest being 2D arrays (matrices). Compacting garbage collectors also often employ pointer pointers.
What pointer type will you use to implement a heterogeneous linked list in c?
void pointer
What is the use of null pointer?
Pointer is a variable that stores address of a variable . A NULL Pointer a pointer that doesn't point to anything, it is a literal zero .Some people ,notably C++ programmers, prefer to use 0 rather than NULL.
Why you use float pointer instead of integer pointer?
It depends on what type of data you wish to manipulate.
How does one use a Green Laser Pointer II?
A Green Laser Pointer is very simple to use. In order to see the green laser from the pointer, you press the button and point it onto an opaque surface.
