TAILIEUCHUNG - Data Structures and Algorithms – C++ Implementation

BK Ho Chi Minh City University of Technology Faculty of Computer Science and Engineering BK Data Structures and Algorithms – C++ Implementation Huỳnh T n t Email: htdat@ Home Page: .Pointer in C++ Declaration Node *ptr; Create an object ptr = new Node(); A pointer usage printf(“Data in node: %d”, ptr-data); Destroy an object delete ptr; NULL pointer ptr = NULL; ??? ptr ptr ??? ptr ptr Faculty of Computer Science and Engineering – HCMUT Slide 2 .Pointer in C++ Be careful in these cases: Before ptr1 Before ptr1 ptr2 ptr1 = ptr2; ptr2 delete ptr1; ptr1 = NULL; Garbage After ptr1 After ptr1 ptr2 ptr2 Dangling reference problem Slide 3 Faculty of Computer Science and Engineering – HCMUT .Parameter Passing Techniques void func(int* a, int* b){ int *t;. | ỂBK Ho Chi Minh City University of Technology BK TP HCM Faculty of Computer Science and Engineering Data Structures and Algorithms -C Implementation Huỳnh Tấn Đạt Email htdat@ Home Page http htdat Pointer in C Declaration Node ptr Create an object ptr new Node A pointer usage printf Data in node d Destroy an object delete ptr NULL pointer ptr NULL ptr ptr ptr- data ptr Faculty of Computer Science and Engineering - HCMUT Slide 2 Pointer in C Be careful in these cases Faculty of Computer Science and Engineering - HCMUT Slide

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