Miscellaneous

Is there triple pointer possible in C?

Is there triple pointer possible in C?

An integer pointer can be used as starting address of integer array. Similarly, an pointer to integer pointer can be used as the starting address to a array of integer pointers. We can use triple pointer for 3-D arrays & so on in similar fashion.

What is pointers What is the use of having double triple and quadruple pointers?

Double and triple pointers are often used for 2 reasons – passing a pointer to a function and dynamic allocation of memory for 2D and 3D arrays. The use of pointers for dynamic memory allocation is described in C++ Dynamic Memory.

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What is the advantage of the triple Ref technique?

A single pointer would point to a single block of data (suppose in a large file) using the triple pointer would result in 3 times faster processing as different blocks of data(in the same file) can be pointed by different pointer and thus data could be accessed/processed faster (unlike 1 pointer going through the whole …

What is the use of double pointer in C?

The first pointer is used to store the address of the variable. And the second pointer is used to store the address of the first pointer. That is why they are also known as double pointers.

How many levels can pointer have in C?

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.

How many pointers are there in C?

There are eight different types of pointers they are: Null pointer. Void pointer. Wild pointer.

Can we compare two pointers in C?

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How to compare pointers in C/C++? We can compare pointers if they are pointing to the same array. Relational pointers can be used to compare two pointers. Pointers can’t be multiplied or divided.

What are pointers in C?

A pointer is a variable whose value is the address of another variable, i.e., direct address of the memory location. Like any variable or constant, you must declare a pointer before using it to store any variable address.

What are the different types of pointers in C?

What are the different types of pointers in C language?

  • Null pointer.
  • Void pointer.
  • Wild pointer.
  • Dangling pointer.
  • Complex pointer.
  • Near pointer.
  • Far pointer.
  • Huge pointer.

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

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.

What are the different types of pointers in C programming?

1 Null Pointer. We can create a null pointer by assigning null value during the pointer declaration. 2 Void Pointer. In C programming, a void pointer is also called as a generic pointer. It does not have any standard data type. 3 Wild pointer. A pointer is said to be a wild pointer if it is not being initialized to anything.

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What are the advantages and disadvantages of pointers in C?

Advantages of Pointers in C 1 Pointers are useful for accessing memory locations. 2 Pointers provide an efficient way for accessing the elements of an array structure. 3 Pointers are used for dynamic memory allocation as well as deallocation. 4 Pointers are used to form complex data structures such as linked list, graph, tree, etc. More

What are the requirements for a pointer type to be proptable?

In this case proptablewould need to have a triple-pointer type (and possibly quadruple pointer if the final resulting type is a pointer type).

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

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. Here b points to a char that stores ‘g’ and c points to the pointer b.