OOP HomeWork

2025-08-11 00:01:30 +08:00
commit e8a5ca2363
119 changed files with 3187 additions and 0 deletions
--- a/oop_hw4/hw6/main.cpp
+++ b/oop_hw4/hw6/main.cpp
@@ -0,0 +1,76 @@
+#include <iostream>
+#include <cstddef> 
+
+class A {
+private:
+    int data[10]; // ģ<><C4A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڲ<EFBFBD><DAB2><EFBFBD><EFBFBD><EFBFBD>
+
+    // <20><>̬<EFBFBD><CCAC>Ա<EFBFBD><D4B1><EFBFBD><EFBFBD>ͳ<EFBFBD><CDB3>
+    static size_t createdCount;
+    static size_t destroyedCount;
+    static size_t totalAllocatedBytes;
+    static size_t currentUsedBytes;
+
+public:
+    // <20><><EFBFBD><EFBFBD> new
+    void* operator new(size_t size) {
+        createdCount++;
+        totalAllocatedBytes += size;
+        currentUsedBytes += size;
+        std::cout << "[new] size = " << size << std::endl;
+        return ::operator new(size);
+    }
+
+    // <20><><EFBFBD><EFBFBD> delete
+    void operator delete(void* ptr, size_t size) {
+        destroyedCount++;
+        currentUsedBytes -= size;
+        std::cout << "[delete] size = " << size << std::endl;
+        ::operator delete(ptr);
+    }
+
+    // <20><><EFBFBD><EFBFBD> new[]
+    void* operator new[](size_t size) {
+        // <20><><EFBFBD><EFBFBD><EFBFBD>ڿ<EFBFBD><DABF>ܺ<EFBFBD><DCBA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>󣬼<EFBFBD><F3A3ACBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
+        createdCount++; // ע<>⣺<EFBFBD><E2A3BA><EFBFBD><EFBFBD>ֻͳ<D6BB><CDB3>һ<EFBFBD>Σ<EFBFBD><CEA3>ɸ<EFBFBD><C9B8><EFBFBD>ϸͳ<CFB8><CDB3>
+        totalAllocatedBytes += size;
+        currentUsedBytes += size;
+        std::cout << "[new[]] size = " << size << std::endl;
+        return ::operator new[](size);
+    }
+
+    // <20><><EFBFBD><EFBFBD> delete[]
+    void operator delete[](void* ptr, size_t size) {
+        destroyedCount++; // ͬ<><CDAC>
+        currentUsedBytes -= size;
+        std::cout << "[delete[]] size = " << size << std::endl;
+        ::operator delete[](ptr);
+    }
+
+    // ͳ<><CDB3><EFBFBD><EFBFBD>Ϣ
+    static void showStats() {
+        std::cout << "Created: " << createdCount << std::endl;
+        std::cout << "Destroyed: " << destroyedCount << std::endl;
+        std::cout << "Total allocated: " << totalAllocatedBytes << " bytes" << std::endl;
+        std::cout << "Current in use: " << currentUsedBytes << " bytes" << std::endl;
+    }
+};
+
+// <20><>̬<EFBFBD><CCAC>Ա<EFBFBD><D4B1>ʼ<EFBFBD><CABC>
+size_t A::createdCount = 0;
+size_t A::destroyedCount = 0;
+size_t A::totalAllocatedBytes = 0;
+size_t A::currentUsedBytes = 0;
+
+int main() {
+    A* a1 = new A;
+    A* a2 = new A;
+    delete a1;
+
+    A* arr = new A[3];
+    delete[] arr;
+
+    A::showStats();
+    return 0;
+}
+