Виртуален деструктор

triffon · May 11, 2022 · 26274be · 26274be
1 parent ebcda45
commit 26274be
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Showing 3 changed files with 21 additions and 4 deletions.
diff --git a/lectures/1/player/main.cpp b/lectures/1/player/main.cpp
@@ -1,4 +1,5 @@
 #include <iostream>
+#include <typeinfo>
 #include "player.hpp"
 #include "hero.hpp"
 #include "superhero.hpp"
@@ -69,6 +70,8 @@ void testHero() {
 }
 
 void testSuperHero() {
+    std::cout << sizeof(Player) << std::endl;
+
     SuperHero superman("Супермен", 100, 5, "летене", false, 10);
     superman.println();
     SuperHero superman2 = superman;
@@ -109,8 +112,17 @@ void testSuperHero() {
         std::cout << "Изглежда героите са равносилни!";
     }
 
-    SuperHero drstrange("Dr. Strange", 20, 8, "отваряне на портали", true, 9);
-    hero = &drstrange;
+    std::cout << typeid(hero).name() << ' ' << typeid(*hero).name() << std::endl;
+
+    if (typeid(*hero) == typeid(SuperHero))
+        std::cout << "Я, това било супергерой!\n";
+
+    hero = new SuperHero("Dr. Strange", 20, 8, "отваряне на портали", true, 9);
+
+    std::cout << typeid(hero).name() << ' ' << typeid(*hero).name() << std::endl;
+
+    if (typeid(*hero) == typeid(SuperHero))
+        std::cout << "Я, това било супергерой!\n";
 
     winner = Hero::battle(superman, *hero, 40);
     if (winner != nullptr) {
@@ -120,14 +132,18 @@ void testSuperHero() {
         std::cout << "Изглежда героите са равносилни!";
     }
 
-    drstrange.deactivatePower();
+    ((SuperHero*)hero)->deactivatePower();
     winner = Hero::battle(superman, *hero, 50);
     if (winner != nullptr) {
         std::cout << "Имаме победител!" << std::endl;
         winner->println();
     } else {
         std::cout << "Изглежда героите са равносилни!";
     }
+
+    std::cout << "Изтриваме hero:\n";
+    delete hero;
+    std::cout << "Изтрихме hero!\n";
 }
 
 int main() {

diff --git a/lectures/1/player/player.hpp b/lectures/1/player/player.hpp
@@ -21,7 +21,7 @@ class Player {
     Player(const char* _name = "<анонимен>", unsigned _score = 0);
     Player(Player const&);
     Player& operator=(Player const&);
-    ~Player();
+    virtual ~Player();
 
     char const* getName() const { return name; }
     unsigned getScore() const { return score; }

diff --git a/lectures/1/player/superhero.cpp b/lectures/1/player/superhero.cpp
@@ -47,6 +47,7 @@ SuperHero& SuperHero::operator=(SuperHero const& other) {
 
 SuperHero::~SuperHero() {
     // !!! Hero::~Hero();
+    std::cout << "~SuperHero()\n";
     delete[] power;
 }