Pointer to Double Dimension Array
product image
  • What you'll learn
    • ✓How to declare a Two Dimensional Array of pointers in C?
    ✓How to assign a pointer to an array in C++?
    ✓How to create a 2D array of pointers:
    ✓Implementation of the 2D array of pointers.
    ✓How to return 2D array pointer in C?
  • Let’s find the right course for you!
  • Courses focused on building strong foundational skills for career growth
  • A third item
  • A fourth item
  • And a fifth one
  • data_type (*array_name)[column_size]; For example, int (*ptr)[4] = arr; Here, int arr[3][4] declares an array with 3 rows (outer arrays) and 4 columns (inner arrays) of integers
  • The elements of 2-D array can be accessed with the help of pointer notation also. Suppose arr is a 2-D array, we can access any element arr[i][j] of the array using the pointer expression *(*(arr + i) + j).
  • A better way to initialize this array with the same array elements is given below: int test[2][3] = { {2, 4, 5}, {9, 0, 19}}; This array has 2 rows and 3 columns, which is why we have two rows of elements with 3 elements each.
  • This example: int *ptr; int arr[5]; // store the address of the first // element of arr in ptr ptr = arr; Here, ptr is a pointer variable while arr is an int array. The code ptr = arr; stores the address of the first element of the array in variable ptr .
  • *arr is a pointer to the first element of the 2D array.
  • The data inside the two-dimensional array in C++ can be visualized as a table (row-column manner). The location of each place in the two-dimensional arrays can be accessed using two variables, i and j, where i represents the row index and j represents the column index.
  • Declare the pointer array and initialize it with the addresses of other variables. Use the array subscript operator to access the pointers in the array. Use the dereference operator to access the value stored at the address pointed by the pointer in the array
  • The process begins by making a copy of the pointer that points to the array: int *ptr = A; // ptr now also points to the start of the array. This pointer points to the first element in the array. You can dereference that pointer to access the array element.
  • We can simply initialize an array of pointers by assigning them some valid address using the assignment operator. Generally, we initialize the pointers that currently do not point to any location to a NULL value. This helps us avoid bugs such as segmentation faults
  • To assign a pointer to the array we can use the following declaration... int a[10]; int *pa = &a[0]; Basically this assigns the memory address of a[0] the first element in array a to pointer of type int .

Requirement

A Two Dimensional array of pointers is an array that has variables of pointer type. This means that the variables stored in the 2D array are such that each variable points to a particular address of some other element.

Are you an absolute beginner looking forward to kickstart your journey in the programming domain. Coding can be hard skill learn to learn for many but no more. Welcome to C++ Programming Essentials, the most fundamental course that every aspiring programmer should take to kickstart their journey in the world of programming. The course teaches you the fundamental building blocks of programming and builds a logical thinking mindset using C++ as our programming language. Many concepts taught in the course are also relevant to other languages like Java, Python, JavaScript etc with few changes in the coding syntax. You will understand the basic concepts and techniques to break down a given problem into smaller parts by drawing flowcharts, write pseudocode, and then diving deep into C++ topics like - variables, datatypes, flow control using branching & loops, functions, arrays, character arrays & strings, recursion, bitmasking & OOPs concepts. Course Features HD Videos Intuitive Explanations Beginner Friendly Teaching Tested Industry vetted curriculum Assignments & Q-A Support Certificate of Completion
  • Related Topics
    • product image
  • Related Topics
    • product image
  • Related Topics
    • product image
  • Related Topics
    • product image

MIS Online computer course

May God Bless us MIS

Description In this course we will go step by step to build a complete custom MVC (Model View Controller)
framework Called TraversyMVC
using object oriented PHP. We will build something similar to Codeigniter but much much lighter.
This framework is completely open source and you are free to change the name, add stuff,
etc and use it as your own. This framework will include...