rzeczy

uczelnia/2_semestr/programowanie/laby/lab8/macierz.cpp

@@ -0,0 +1,117 @@
+#include <iostream>
+#include <ostream>
+#define SIZE 2
+
+class Macierz2x2 {
+
+public:
+  int macierz[SIZE][SIZE];
+  Macierz2x2(int a, int b, int c, int d) {
+    macierz[0][0] = a;
+    macierz[0][1] = b;
+    macierz[1][0] = c;
+    macierz[1][1] = d;
+  }
+  Macierz2x2() {
+    for (int i = 0; i < SIZE; i++) {
+      for (int j = 0; j < SIZE; j++) {
+        macierz[i][j] = 0;
+      }
+    }
+  }
+
+  Macierz2x2 &operator+=(const Macierz2x2 &inna_macierz) {
+    for (int i = 0; i < SIZE; i++) {
+      for (int j = 0; j < SIZE; j++) {
+        macierz[i][j] += inna_macierz.macierz[i][j];
+      }
+    }
+    return *this;
+  }
+
+  Macierz2x2 operator+(const Macierz2x2 &inna_macierz) const {
+    Macierz2x2 m = *this;
+    m += inna_macierz;
+    return m;
+  }
+
+  Macierz2x2 &operator-=(const Macierz2x2 &inna_macierz) {
+    for (int i = 0; i < SIZE; i++) {
+      for (int j = 0; j < SIZE; j++) {
+        macierz[i][j] -= inna_macierz.macierz[i][j];
+      }
+    }
+    return *this;
+  }
+
+  Macierz2x2 operator-(const Macierz2x2 &inna_macierz) const {
+    Macierz2x2 m = *this;
+    m -= inna_macierz;
+    return m;
+  }
+
+  Macierz2x2 operator*(const Macierz2x2 &inna_macierz) const {
+    Macierz2x2 m;
+    m.macierz[0][0] = macierz[0][0] * inna_macierz.macierz[0][0] +
+                      macierz[0][1] * inna_macierz.macierz[1][0];
+    m.macierz[0][1] = macierz[0][0] * inna_macierz.macierz[0][1] +
+                      macierz[0][1] * inna_macierz.macierz[1][1];
+    m.macierz[1][0] = macierz[1][0] * inna_macierz.macierz[0][0] +
+                      macierz[1][1] * inna_macierz.macierz[1][0];
+    m.macierz[1][1] = macierz[1][0] * inna_macierz.macierz[0][1] +
+                      macierz[1][1] * inna_macierz.macierz[1][1];
+    return m;
+  }
+
+  int *operator[](int x) { return macierz[x]; }
+  const int *operator[](int x) const { return macierz[x]; }
+
+  friend std::ostream &operator<<(std::ostream &os, Macierz2x2 &macierz) {
+    for (int i = 0; i < SIZE; i++) {
+      os << '[';
+      for (int j = 0; j < SIZE; j++) {
+        os << macierz.macierz[i][j];
+        if (j < SIZE - 1)
+          os << " ";
+      }
+      os << ']';
+      os << '\n';
+    }
+    return os;
+  }
+
+  friend std::istream &operator>>(std::istream &is, Macierz2x2 &macierz) {
+    char separator;
+    is >> macierz.macierz[0][0] >> separator >> macierz.macierz[0][1] >>
+        separator >> macierz.macierz[1][0] >> separator >>
+        macierz.macierz[1][1];
+    return is;
+  }
+
+  explicit operator double() const {
+    return macierz[0][0] * macierz[1][1] - macierz[1][0] * macierz[0][1];
+  }
+
+  const int operator()(int i, int j) const { return macierz[i][j]; }
+  int &operator()(int i, int j) { return macierz[i][j]; }
+};
+
+int main() {
+  Macierz2x2 m1 = Macierz2x2(1, 2, 3, 4);
+  std::cout << "Macierz 1:\n";
+  std::cout << m1;
+  Macierz2x2 m2;
+  std::cout << "Podaj swoją macierz: \n";
+  std::cout << "Macierz 2:\n";
+  std::cin >> m2;
+  std::cout << m2;
+  Macierz2x2 m3 = m1 + m2;
+  Macierz2x2 m4 = m1 * m2;
+  std::cout << "Macierz 3(dodawanie):\n";
+  std::cout << m3 << std::endl;
+  std::cout << "Macierz 4(mnożenie):\n";
+  std::cout << m4 << std::endl;
+  std::cout << "Wyznacznik macierz m1: " << double(m1) << std::endl;
+  std::cout << "Element (1,1) macierzy m1: " << m1(1, 1) << std::endl;
+  ;
+}