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A pointer is a pointer to something else.
One way to look at it is that there is only one pointer type - an address to something else.
Another way to look at it is to see how many different types there are, such as int, char, float, struct, double, etc. and to realize that you can build a pointer to any of them, as well as a pointer to a pointer to any of them, etc., etc., etc.
Bottom line, is there are an unlimited number of types of pointers.
What else can I help you with?
What pointer type will you use to implement a heterogeneous linked list in c?
void pointer
What is generic pointer in C?
When a variable is declared as being a pointer to type void it is known as a generic pointer. Since you cannot have a variable of type void, the pointer will not point to any data and therefore cannot be dereferenced. It is still a pointer though, to use it you just have to cast it to another kind of pointer first. Hence the term Generic pointer.
How is a structure type pointer variable declared in c?
struct thisorthat *ptr;
Why void is used in c language?
void as function return-type means no return value void as function parameter means no parameter void * as pointer type means generic pointer
Is type checking on pointer variables stronger in assembly language or in c plus plus?
C++ imposes far greater restrictions on pointer typing than assembly language. There is only a single type of pointer in assembly, which is only "typed" in any sense when dereferenced, and even then only by size. C++ pointer typing takes into account not only the size of the type of the referent, but a number of other factors, such as its relationship to other types in the class hierarchy. The only way to disable these safety checks is to explicitly break the type system using reinterpret_cast.
What pointer type will you use to implement a heterogeneous linked list in c?
void pointer
What is generic pointer in C?
When a variable is declared as being a pointer to type void it is known as a generic pointer. Since you cannot have a variable of type void, the pointer will not point to any data and therefore cannot be dereferenced. It is still a pointer though, to use it you just have to cast it to another kind of pointer first. Hence the term Generic pointer.
How is a structure type pointer variable declared in c?
struct thisorthat *ptr;
How can one create a pointer to structure in C?
Create a pointer of the type (pointer to struct) and assign the address of an instance of the structure to your pointer: typedef struct x { /* ... */ }; struct x my_structure; struct x* ptr = &my_structure;
Why void is used in c language?
void as function return-type means no return value void as function parameter means no parameter void * as pointer type means generic pointer
Is type checking on pointer variables stronger in assembly language or in c plus plus?
C++ imposes far greater restrictions on pointer typing than assembly language. There is only a single type of pointer in assembly, which is only "typed" in any sense when dereferenced, and even then only by size. C++ pointer typing takes into account not only the size of the type of the referent, but a number of other factors, such as its relationship to other types in the class hierarchy. The only way to disable these safety checks is to explicitly break the type system using reinterpret_cast.
How many bytes are read in pointers by pointers dereferencing?
When you dereference a pointer you "read" the number of bytes determined by the pointer's type. That is, a char pointer dereferences a single byte while an int pointer dereferences 4 bytes (assuming a 32-bit int) -- regardless of the type actually stored at that address. However, note that a pointer can only actually point at a single byte since it only has storage for a single memory address. How many additional bytes are dereferenced is entirely dependant on the type of the pointer. To determine how many bytes are actually allocated to an address, use the sizeof operator, passing a dereferenced pointer (the pointer must point at the start of the allocation). If the pointer points at several elements of the same type (an array), then divide the total bytes by the size of the pointer's type to determine the number of elements in the array.
How can you offset a pointer in C?
Increment or decrement the pointer by the required offset.
What is pointer to a member in objective c?
It is a pointer that points to a member of a structure.
Pointer arithemetic in C?
no
Is void a data type in c?
what is void data type Void is an empty data type normally used as a return type in C/C++, C#, Java functions/methods to declare that no value will be return by the function. The another use of void is to declare the pointer in C/C++ whe It is not sure that what data type will be addressed by the pointer. eg: void *p; Here p can hold the address of int or float or char or long int or double.
What is the purpose of pointer in C?
the purpose of pointer in c for saving the memory space.,and reduce the length and complexity of the program
