81 lines
2.0 KiB
C++
81 lines
2.0 KiB
C++
/*
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Nome: Mario
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Cognome: Montanari
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Moltiplicazione tra due matrici
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*/
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#include <iostream>
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#include <cstdlib>
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#include <array>
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#include <ctime>
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#include <iomanip>
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#define NROW 2
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#define NCOL 2
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#define VMIN -5
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#define VMAX 5
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using namespace std;
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void fillMatrix(int matrix[][NCOL], int nrow, int ncol);
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void printMatrix(int matrix[][NCOL], int nrow, int ncol);
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void multiplyMatrices(int matrix1[][NCOL], int matrix2[][NCOL], int result[][NCOL], int nrow, int ncol);
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int main(void) {
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int matrix1[NROW][NCOL];
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int matrix2[NROW][NCOL];
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int result[NROW][NCOL];
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fillMatrix(matrix1, NROW, NCOL);
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fillMatrix(matrix2, NROW, NCOL);
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cout << "First Matrix: " << endl;
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printMatrix(matrix1, NROW, NCOL);
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cout << "Second Matrix: " << endl;
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printMatrix(matrix2, NROW, NCOL);
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multiplyMatrices(matrix1, matrix2, result, NROW, NCOL);
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cout << "Product of the Matrices: " << endl;
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printMatrix(result, NROW, NCOL);
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return 0;
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}
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void fillMatrix(int matrix[][NCOL], int nrow, int ncol) {
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srand(time(NULL));
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for (int i = 0; i < nrow; i++) {
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for (int j = 0; j < ncol; j++) {
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matrix[i][j] = rand() % (VMAX - VMIN + 1) + VMIN;
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}
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}
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}
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void printMatrix(int matrix[][NCOL], int nrow, int ncol) {
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for (int i = 0; i < nrow; i++) {
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cout << endl;
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for (int j = 0; j < ncol; j++) {
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cout << setw(5) << matrix[i][j];
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}
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cout << endl;
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}
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cout << endl << endl << endl;
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}
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void multiplyMatrices(int matrix1[][NCOL], int matrix2[][NCOL], int result[][NCOL], int nrow, int ncol) {
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for (int i = 0; i < nrow; i++) {
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for (int j = 0; j < ncol; j++) {
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result[i][j] = 0;
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}
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}
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for (int i = 0; i < nrow; i++) {
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for (int j = 0; j < ncol; j++) {
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for (int k = 0; k < ncol; k++) {
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result[i][j] = result[i][j] + matrix1[i][k] * matrix2[k][j];
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}
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}
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}
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} |