#18 Introduction to Pointers in C

Описание: #welcome_to_kiet_patna#pointeri_n_c


A Pointer in C language is a variable which holds the address of another variable of same data type. Pointers are used to access memory and manipulate the address. Pointers are one of the most distinct and exciting features of C language.


What are pointers in C programming?



The Pointer in C, is a variable that stores address of another variable. A pointer can also be used to refer to another pointer function. A pointer can be incremented/decremented, i.e., to point to the next/ previous memory location. The purpose of pointer is to save memory space and achieve faster execution time.


What are the types of pointers?
Types of Pointers

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

Advantages of Using Pointers

Less time in program execution.
Working on the original variable.
With the help of pointers, we can create data structures (linked-list, stack, queue).
Returning more than one values from functions.
Searching and sorting large data very easily.
Dynamically memory allocation.


Advantages and disadvantages of pointers in c

Pointers provide direct access to memory. Pointers provide a way to return more than one value to the functions. Reduces the storage space and complexity of the program. Reduces the execution time of the program. Provides an alternate way to access array elements



What is pointer in C with example?
A pointer is a variable that stores the address of another variable. Unlike other variables that hold values of a certain type, pointer holds the address of a variable. For example, an integer variable holds (or you can say stores) an integer value, however an integer pointer holds the address of a integer variable


Which is better array or pointer?
The pointer can be used to access the array elements, accessing the whole array using pointer arithmetic, makes the accessing faster. Furthermore, the other difference lies between the implementation of the array and pointer where the array are implemented when the fixed size of the memory is allocated.


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