/*
 * programa.java
 *
 * Created on 26 de julio de 2002, 11:52 PM
 */

/**
 *
 * @author  Juan Martín Barrios Vargas
 * @version Java SDK 1.3.1
 */

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;

public class program {

    /** Creates new programa */
    public static void main(String args []) {
        BufferedReader cin = new BufferedReader (new InputStreamReader (System.in));
        String option = " ";
        int opt = 0;
        double escalar = Math.PI;
        double [][]a_1 = { {1, 2, 3}, {4, 5, 6}, {7, 8, 9}};
        matrix a = new matrix(a_1);
        double [][]b_1 = { {1, 2, 3}, {4, 5, 6}, {7, 8, 9}};
        matrix b = new matrix(b_1);
        // menu
        System.out.println("*******************************************\n"+
                           "*    ¿ Qué operación deseas hacer ?       *\n"+
                           "*                                         *\n"+
                           "*   1. Suma de matrices                   *\n"+
                           "*   2. Resta de matrices                  *\n"+
                           "*   3. Multiplicación de matrices         *\n"+
                           "*   4. Traza de una matriz                *\n"+
                           "*   5. Transpuesta de una matriz          *\n"+
                           "*   6. Multiplicación por un escalar      *\n"+
                           "*                                         *\n"+
                           "*******************************************");
        // end menu
        try {
            option = cin.readLine();
        }
        catch (IOException e) {};
        opt = Integer.parseInt(option);
        
        // 
        if (opt == 1) {
            matrix r = matrix_operations.plus(a,b);
            System.out.println( " El resulatdo es: "+ r );
        }
        else if (opt == 2) {
            matrix r = matrix_operations.minus(a,b);
            System.out.println( " El resulatdo es: "+ r );
        }
        else if (opt == 3) {
            matrix r = matrix_operations.multiplication(a,b);
            System.out.println( " El resulatdo es: "+ r );
        }
        else if (opt == 4) {
            double r = matrix_operations.trace(a);
            System.out.println( " El resulatdo es: "+ r );
        }
        else if (opt == 5) {
            matrix r = matrix_operations.transpouse(a);
            System.out.println( " El resulatdo es: "+ r );
        }
        else if (opt == 6) {
            matrix r = matrix_operations.escalar_multiplication(a,escalar);
            System.out.println( " El resulatdo es: "+ r );
        }
    }

}