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Concept explainers
(a) In this task we consider ptr as a 2D matrix. Whereas, number of rows would be fixed but make number of columns variables. To do this, instead of using arrays of fixed column size allocated on stack, you will make each element of array to have nColumns (passed as argument to the function) elements and store them on heap using new operator. Next, initialize the values of these arrays randomly using for loop and ptr. Finally display the sum of each individual array.
You are not allowed to access the array using original variable name.
(b) In the previous task we make number of columns of a 2D matrix variables. Here we will make number of rows variables as well. Thus we will have a way of defining a generic 2D matrix according to user choice. Now your goal is to write a function that receives three arguments: (i) an alias to a 2D pointer; (ii)number of rows; and (iii) number of columns; Now your goal is to first allocate the memory for rows and then for columns dynamically using new operator.
(c) In this function, your goal is to write code for deallocating a dynamically allocated 2D matrix. Your function will receive three arguments: (i) a 2D pointer; (ii) number of rows; and (iii) number of columns. Complete the code to properly deallocate.
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- You need to generate a (5x12) rain matrix (Rain[5][12]) that contains the average rainfall over 12 months for a 5 year period. You program should do the following steps: Create a 5x12 integer rainfall matrix Create a 5 element array of int pointers(int * Rain[5]) and assign each pointer to the address of the first element of each row Populate the elements of the matrix with pseudo-random numbers having a range from 0-100 Use the rand( ) function to generate your temperatures. The output of rand() should be mod with 100 (rand()%100) in order to get reasonable rainfall values. Init the random number generator with long seed = srand(67) This task should be performed by a function, void RainGen(int* Rain[ ], int R, int C), that populates all the matrix entries. After generating all rainfall matrix entries, print the entire matrix using the function, void Print(int* Rain[ ], int R, int C); Calculate the total monthly Rainfall per year for the entire five years. Use the following…arrow_forwardASSIGNMENT: Working with Vectors Write a menu-driven program that will allow the user to run any of the following questions. Please put the functions headers in h file and the functions definitions in a .cpp file. 1. Write C++ code for a loop that simultaneously computes both the maximum and minimum element in a given vector. 2. Write a function double scalar_product(vector a, vector b) that computes the scalar product of two vectors. The scalar product of two vectors A[al, a2, a3) and B(bl, b2, b3} is another vector C given by C{c1, c2, c3} where cl = al * b1, c2 = a2 + b2, c3 = a3 + b3. 3. Write a function that computes the alternating sum of all elements in a vector. For example, if alternatingSum() is called with a vector containing 149 16 9 7 4 9 11 then it computes 1-4+9-16+9-7+4-9+11=-2 4. Write a procedure reverse that reverses the sequence of elements in a vector. For example, if reverse is called with a vector containing 1 49 16 9 7 4 9 11 then the vector is changed 11 9 4 7…arrow_forward
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