gistfile1.txt

#include <iostream>
#include <omp.h>
using namespace std;

void main() {
	setlocale(LC_ALL, "RUS");

	cout << "-----Умножение матриц A[x][y] B[m][n]---.\nПервая матрица A [x] [y]\nВведите x: ";
	int i = 0;
	int x = 0, y = 0, m = 0, n = 0, dx = 0, dy=0;
	cin >> x;
	cout << "Введите y: ";
	cin >> y;
	cout << "\nПервая матрица A [" << x << "] [" << y << "]"<<endl;
	m = y; //столбцы равны строкам второй.
	cout << "\nВторая матрица B [" << m << "] [n]\nВведите n: ";
	cin >> n;
	cout << "\nВторая матрица B [" << m << "] [" << n << "]\n";
	dx = x;
	dy = n;
	////////////Динамические матрицы///////////
	int **a, **b, **dm;
	a = new int*[x];
	for (i = 0; i < x; i++) a[i] = new int[y];
	b = new int*[m];
	for (i = 0; i < m; i++) b[i] = new int[n];
	dm = new int*[dx];
	for (i = 0; i < dx; i++) dm[i] = new int[dy];
	/////////Заполнение матриц///////////////
	char ch;
	bool check = false, resultat = false;
	do {
		cout << "\nЗаполнить матрицы автоматически д/н (y/n):";
		cin >> ch;
		switch (ch)
		{
		case -83:
		{
			cout << "\nРучной ввод\n";
			check = true;
			break;

		}
		case 110:
		{
			cout << "\nРучной ввод\n";
			check = true;
			break;

		}
		case 121:
		{
			cout << "\nАвтоматический ввод\n";
			check = true;
			resultat = true;
			break;

		}
		case -92:
		{
			cout << "\nАвтоматический ввод\n";
			check = true;
			resultat = true;
			break;

		}
		default:
			break;
		}
	} while (!check);

	if (resultat) {
#pragma omp parallel for private (i)
		for (i = 0; i < x; i++)
			for (int j = 0; j < y; j++)	{//cout << "А[" << i + 1 << "] [" << j + 1 << "] = ";
				a[i][j] = rand()%1000;						
			}
#pragma omp parallel for private (i)
		for (i = 0; i < m; i++)
			for (int j = 0; j < n; j++) {
				//cout << "B[" << i + 1 << "] [" << j + 1 << "] = ";
				b[i][j] = rand() % 1000;
			}
	}
	else {
		cout << "введите матрицу А" << endl;
		for (i = 0; i < x; i++)
			for (int j = 0; j < y; j++)
			{
				cout << "А[" << i + 1 << "] [" << j + 1 << "] = " ;
				cin >> a[i][j];				//a[x][y]
			}
		cout << "введите матрицу B" << endl;
		for (int i = 0; i < m; i++)
			for (int j = 0; j < n; j++)
			{
				cout << "B[" << i + 1 << "] [" << j + 1 << "] = ";
				cin >> b[i][j];
			}
	}



	cout << "матрица А[" << x << "] [" << y << "]" << endl;
	for (int i = 0; i < y+3;i++) cout << "-" ;
	cout << endl;
	for (int i = 0; i < x; i++) {
		
		for (int j = 0; j < y; j++)
		{
			cout << a[i][j] << " ";

		}
		cout << endl;
	}
	for (int i = 0; i < y + 3; i++) cout << "-";
	cout << "-" << endl;

	cout << "матрица B[" << m << "] [" << n << "]" << endl;
	for (int i = 0; i < n + 3; i++) cout << "-";
	cout << endl;
	for (int i = 0; i < m; i++) {

		for (int j = 0; j < n; j++)
		{
			cout << b[i][j] << " ";

		}
		cout << endl;
	}
	for (int i = 0; i < y + 3; i++) cout << "-";
	cout << "-" << endl;


	/////////УМНОЖЕНИЕ МАТРИЦ/////////
	int inner, row, col,sum;

#pragma omp parallel for private (row,col,sum)
		for (int row = 0; row < dx; row++) {
			for (int col = 0; col < dy; col++) {
				sum = 0;
				//Multiply the row of A by the column of B to get the row, column of product.
				for (inner = 0, dm[row][col] = 0; inner < y; inner++) {
					sum+= a[row][inner] * b[inner][col];
					
				}
				dm[row][col] = sum;
			}
		}
	

	cout << "матрица X[" <<dx << "] [" << dy << "]" << endl;
	for (int i = 0; i < dy + 3; i++) cout << "-";
	cout << endl;
	for (int i = 0; i < dx; i++) {

		for (int j = 0; j < dy; j++)
		{
			cout << dm[i][j] << " ";

		}
		cout << endl;
	}
	for (int i = 0; i < y + 3; i++) cout << "-";
	cout << "-" << endl;


	for (i = 0; i < x; i++)	delete[] a[i];//освобождение памяти для каждого элемнта a[i]	
	delete[]a;//освобождение памяти для а
	for (i = 0; i < m; i++)	delete[] b[i];//освобождение памяти для каждого элемнта b[i]
	delete[] b;//освобождение памяти для b
	for (i = 0; i < dx; i++)delete[] dm[i]; //освобождение памяти для каждого элемнта dm[i]
	delete[]dm; //освобождение памяти dm



	getchar();
	getchar();
}