Sage-Tips

What are pointers What are near and far pointer?

Near pointer is used to store 16 bit addresses means within current segment on a 16 bit machine. A far pointer is typically 32 bit that can access memory outside current segment. To use this, compiler allocates a segment register to store segment address, then another register to store offset within current segment.

What is a size of near and huge pointer?

It is a pointer which works with in the range of 64Kb data segment of memory.

What is the size of huge pointer in C?

A pointer which can point to any segment in the memory is known as a huge pointer. A huge pointer has a size of 4 bytes or 32-bits and it can access up to 64K size in memory.

What is near far and huge pointers how many bytes are occupied by them?

Near pointer is a 16 bit ie occupies 2 bytes. Whereas far and huge is a 32-bit pointer i.e. 4 bytes. So, near =2 far=4 huge=4 bytes.

What is near pointer in C?

Near pointer is a pointer which is used to bit address of up to 16 bits in a given section of the computer memory that is 16 bit enabled. It can only access data of a small size of about 64 kb in a given period, which is the main disadvantage of this.

What is the difference between near far and huge pointers?

A near-pointer does not have an explicit selector, while huge pointers have an explicit selector. When we perform pointer arithmetic on a far pointer, the selector is not modified, but it can be modified in the case of a huge pointer.

What is the difference between far and near?

As adverbs the difference between near and far is that near is having a small intervening distance with regard to something while far is distant in space, time or degree.

Where far pointer is used?

A far pointer can refer to information outside the 64KB data segment. Typically, such pointers are used with farmalloc() and such, to manage a heap separate from where all the rest of the data lives. If you use a small-data, large-code model, you should explicitly make your function pointers far.

Is near and far preposition?

Near and near to as prepositions The preposition near (to) means ‘not far away in distance’. Near and near to mean the same, but near is more common: She comes from a small place on the coast near Barcelona.

How do you use near and far?

You use near and far to indicate that you are referring to a very large area or distance. People would gather from near and far. Within months his reputation spread near and far.

How do you use near?

1. Near can be used in the following ways:
2. as a preposition: I lived near the school. I’ll write and let you know nearer the time.
3. as an adverb: Come nearer, and I’ll tell you the whole story.
4. as an adjective: I went into the nearest room.
5. in the preposition phrase near to: Pull your chair nearer to the table.

How do you use near in a sentence?

Near sentence example

1. She drew near to him and stopped.
2. There are bears near by.
3. The boy played on the grass near by.
4. Maybe if he saw that she didn’t go near the building, he would relax his guard.
5. The only plus is it’s near the hospital.
6. My teacher is so near to me that I scarcely think of myself apart from her.

What is the difference between far pointer and huge pointer in C?

In case of far pointers, a segment is fixed. In far pointer, the segment part cannot be modified, but in Huge it can be. See below links for more details. http://www.answers.com/Q/What_are_near_far_and_huge_pointers_in_C.

What is a large pointer in C++?

Huge pointers have explicit selector and selector can change when far pointer is incremented/decremented. This is the pointer that is used to bit address of up to 16 bits in a given section of the computer memory that is 16 bit enabled. The main demerit of this bit is that it can only access data of a small size of about 64 kb in a given period.

What are near and huge pointers in computer architecture?

Near, far and huge pointers are old terms that have majorly used in Intel architectures in those earlier days of ms ad dos. The idea about this pointers can be traced back computer CPUs were having a very small address and RAM, and therefore there was a need to have a way to improve waging so as to improve your computer working.

What is the maximum size of a near pointer?

Near Pointer Near pointer is a pointer which is used to bit address of up to 16 bits in a given section of the computer memory that is 16 bit enabled. It can only access data of a small size of about 64 kb in a given period, which is the main disadvantage of this.