// ConsoleApplication1.cpp : This file contains the 'main' function. Program execution begins and ends there.
//

#include "pch.h"
#include <iostream>
#include <ctime>
#include <cmath>
#include <stdlib.h>
using namespace std;

int main()
{
	srand(time(NULL));
	int currentIndex = 0;
	int sum = 0;
	int rowCounter = 0;
	double **darr2 = NULL;
	size_t rows, cols;
	cout << "Please senter number of rows: ";
	cin >> rows;
	cout << "Please senter number of cols: ";
	cin >> cols;

	int end = 122, begin = -12;
	darr2 = new double*[rows];
	for (int i = 0; i < rows; i++)
	{
		darr2[i] = new double[cols];
	}
	for (int i = 0; i < rows; i++) {
		for (int j = 0; j < cols; j++)
		{
			darr2[i][j] = (double)rand() / RAND_MAX * (end - begin) + begin;
		}

	}
	cout << "Matrix: \n";
	for (int i = 0; i < rows; i++)
	{
		for (int j = 0; j < cols; j++)
		{
			cout << darr2[i][j] << "\t\t";
		}
		cout << endl;
	}

		cout << "Matrix main diagonal:" << endl;
		for (int i = 0; i < rows; i++){
			cout << darr2[i][i] << "\t\t";
		}
		cout << endl;

		cout << "Matrix secondary diagonal: \n";
		for (int i = 0; i < rows; i++)
		{
			cout << darr2[i][cols - i - 1] << "\t\t";

		}
		cout << endl;

		cout << "ZADACHA 2:" << endl;
		for (int i = 0; i < rows; i++)
		{
			for (int j = 0; j < cols; j++)
			{
				if ((i + j) < rows - 1){
					cout << "0" << "\t\t";
				}
				else {
					cout << darr2[i][j] << "\t\t";
				}
			}
			cout << endl;
		}

		cout << endl;
		cout << endl;
		cout << endl;



		int indexj = 0;
		cout << "ZADACHA 3:" << endl;
		for (int i = 0; i < rows; i++)
		{
			for (int j = 0; j < cols; j++) {
				if (i > j) {


					darr2[i][j]= pow(i + j,i);



				}
			}

		}
for (int i = 0; i < rows; i++)
		{
			for (int j = 0; j < cols; j++) {
				if (i > j) {


				cout <<	darr2[i][j] << "\t"\t";



				}
			}

		}

		cout << endl;
		cout << endl;
		cout << endl;


		cout << "ZADACHA 4:" << endl;
		cout << "Print Matrix as a spiral: \n";


		int i, k = 0, l = 0, m = rows, n = cols;
		/*
		k - индекс на началния ред
		m - индекс на крайния ред
		l - индекс на началната колона
		n - индекс на крайната колона
		i - итератор
		*/
		while (k < m && l < n) {
			//печатане на първия от оставащите редове
			for (i = l;i < n;i++) {
				cout << darr2[k][i] << "\t\t";
			}
			k++;
			//печатане на последната колона от оставащите редове
			for (i = k; i < m;i++) {
				cout << darr2[i][n - 1] << "\t\t";
			}
			n--;
			if (k < m) {//печатане на последния ред от оставащите редове
				for (i = n - 1; i >= l; --i)
				{
					cout << darr2[m - 1][i] << "\t\t";
				}
				m--;
			}
			//печатане на първа колона от оставащите колони
			if (l < n) {
				for (i = m - 1; i >= k; --i)
				{
					cout << darr2[i][l] << "\t\t";
				}
				l++;
			}
			cout << endl;
		}


		for (int i = 0; i < rows; i++)
		{
			delete[] darr2[i];
		}

		delete[] darr2;
		darr2 = NULL;





		return 0;


}