Admin Table of Contents
- 1 What is the memory used by pointers near Far huge?
- 2 What is a near pointer?
- 3 What is near pointer and far pointer?
- 4 What is pointer how many bytes does a pointer occupy justify your answer?
- 5 What is the advantage of using Near pointers in C++?
- 6 What is the difference between a pointer and a reference?
- 7 What is the use of near pointer in 16 bit architecture?
What is the memory used by pointers near Far huge?
These are some old concepts used in 16 bit intel architectures in the days of MS DOS, not much useful anymore. 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.
What is a 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.
How many bytes are occupied by near far and huge pointer?
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 and far pointer?
It is a pointer which works with in the range of 64Kb data segment of memory. It cannot access address beyond that data segment. A near pointer can be incremented or decremented the address range by using an arithmetic operator.
What is pointer how many bytes does a pointer occupy justify your answer?
Consider a compiler where int takes 4 bytes, char takes 1 byte and pointer takes 4 bytes.
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.
What is the advantage of using Near pointers in C++?
The compiler can generate code with a near pointer and does not have to concern itself with segment addressing, so using near pointers is fastest, and generates smallest code. The limitation is that you can only access 64kb of data at a time, because that is the size of a segment – 64kb.
What is the difference between a pointer and a reference?
A pointer needs to be de referenced with * operator to access the memory location it points to. References: A Reference can be called as a constant pointer that becomes de referenced implicitly. When we access the reference it means we are accessing the storage. Why do we need reference variables if we have pointers?
What is the difference between nearnear pointer and farpointer?
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.
What is the use of near pointer in 16 bit architecture?
These are some old concepts used in 16 bit intel architectures in the days of MS DOS, not much useful anymore. 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.