Given the following array definition and code snippet what is the following code doing? int MaxC = 4, MaxR = 4, out=0, *ptrd; int d[4][4]={{1,6,5,2},{2,7,3,1},{2,9,3,8},{11,21,4,9}}; ptrd = d[0]; for(int i=0; i < MaxR; i++) out = out + *(ptrd + i + i*MaxC);

May you please explain each line I starred and why they have these output values. Thank you!

We have an array variable ‘var’ int var[4] = {25,20,30,40}; Find the memory address of the first element of in the array: var[0]

Given the Array declaration below, determine the output: int T[8] = {2, 3, 7, 9, -1, 2, 4, 5};   int x = 5;  cout << T[x-2] / T[12-2*x];    int y = -3; cout << pow(T[y+4],T[3-y]);

The Lo Shu Magic Square is a grid with 3 rows and 3 columns shown below.             The Lo Shu Magic Square has the following properties: The grid contains the numbers 1 – 9 exactly The sum of each row, each column and each diagonal all add up to the same number. This is shown below: Write a program that simulates a magic square using 3 one dimensional parallel arrays of integer type. Do not use two-dimensional array. Each one the arrays corresponds to a row of the magic square. The program asks the user to enter the values of the magic square row by row and informs the user if the grid is a magic square or not. Processing Requirements - c++ Use the following template to start your project: #include<iostream> using namespace std;   // Global constants const int ROWS = 3;  // The number of rows in the array const int COLS = 3;  // The number of columns in the array const int MIN = 1;  // The value of the smallest number const int MAX = 9;  // The value of the largest number //…