How many pointers can one have for a variable?

How many pointers can one have for a variable?

There is no limit. A pointer is a chunk of memory whose contents are an address. int a = 10; int *p = &a A pointer to a pointer is also a variable which contains an address of another pointer.

How many levels of indirection in pointers can you have in a single declaration?

How many levels of pointers can you have? The answer depends on what you mean by “levels of pointers.” If you mean “How many levels of indirection can you have in a single declaration?” the answer is “At least 12.”

Is Triple pointer possible in C?

The fact that they’re implemented here as triple pointers is irrelevant to the user. Complicated data structures should be encapsulated. This is one of manifest ideas of Object Oriented Programming. Even in C, you can apply this principle to some extent.

Is pointers available in C?

C allows you to have pointer on a pointer and so on. Passing an argument by reference or by address enable the passed argument to be changed in the calling function by the called function. C allows a function to return a pointer to the local variable, static variable, and dynamically allocated memory as well.

What is the maximum level that we can create for pointer to pointer?

What is triple pointer?

A triple-pointer is a pointer that points to a memory location where a double-pointer is being stored. The triple-pointer itself is just one pointer. Ex. int *** is a pointer, that points to the value of a double pointer, which in turn points to the value of a single pointer, which points to the value of an int.

What is the size of pointer?

Usually it depends upon the word size of underlying processor for example for a 32 bit computer the pointer size can be 4 bytes for a 64 bit computer the pointer size can be 8 bytes.

Why are pointers used in C?

Pointers are used for file handling. Pointers are used to allocate memory dynamically. In C++, a pointer declared to a base class could access the object of a derived class. However, a pointer to a derived class cannot access the object of a base class.

What are levels of pointers in C programming?

This is called levels of pointers. According to ANSI C, each compiler must have at least 12 levels of pointers. This means we can use 12 * symbols with a variable name. Level of pointers or say chain can go up to N level depending upon the memory size.

What is the maximum number of pointers allowed in a declaration?

279 — 12 pointer, array, and function declarators (in any combinations) modifying an arithmetic, structure, union, or void type in a declaration The upper limit is implementation specific. Share Improve this answer

How do you create a pointer to a point in C++?

Pointers to pointers. In C++, we can create a pointer to a pointer that in turn may point to data or other pointer. The syntax simply requires the unary operator (*) for each level of indirection while declaring the pointer.

What is a chain of pointers in C++?

A pointer is used to point to a memory location of a variable. A pointer stores the address of a variable. Similarly, a chain of pointers is when there are multiple levels of pointers. Simplifying, a pointer points to address of a variable, double-pointer points to a variable and so on.