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C++ Pointers and References
C++ Pointers and References
Introduction to Pointer
A pointer is a variable that stores the memory address of another variable. It allows direct manipulation of memory, a powerful tool for dynamic memory allocation and efficient data manipulation.
Declaration and initialization of a pointer looks like this:
- int: specifies the base type of the variable that the pointer will point to. In this case, it's an integer;
- *: called dereference operator, returns the value stored at the address held by a pointer;
- p_Name: the name of the pointer variable. You can choose any valid variable name;
- nullptr: is a keyword that represents a null pointer, indicating that it is empty and doesn't point to anything.
Note
Commonly, pointers are named with a prefix p_ as a naming convention signifying that the variable is a pointer.
Tarefa
- Declare and initialize pointer with a nullptr.
- Display a pointer for a chosen primitive data type.
- Make sure its name has p_ prefix.
Once you've completed this task, click the button below the code to check your solution.
Obrigado pelo seu feedback!
Introduction to Pointer
A pointer is a variable that stores the memory address of another variable. It allows direct manipulation of memory, a powerful tool for dynamic memory allocation and efficient data manipulation.
Declaration and initialization of a pointer looks like this:
- int: specifies the base type of the variable that the pointer will point to. In this case, it's an integer;
- *: called dereference operator, returns the value stored at the address held by a pointer;
- p_Name: the name of the pointer variable. You can choose any valid variable name;
- nullptr: is a keyword that represents a null pointer, indicating that it is empty and doesn't point to anything.
Note
Commonly, pointers are named with a prefix p_ as a naming convention signifying that the variable is a pointer.
Tarefa
- Declare and initialize pointer with a nullptr.
- Display a pointer for a chosen primitive data type.
- Make sure its name has p_ prefix.
Once you've completed this task, click the button below the code to check your solution.
Obrigado pelo seu feedback!
Introduction to Pointer
A pointer is a variable that stores the memory address of another variable. It allows direct manipulation of memory, a powerful tool for dynamic memory allocation and efficient data manipulation.
Declaration and initialization of a pointer looks like this:
- int: specifies the base type of the variable that the pointer will point to. In this case, it's an integer;
- *: called dereference operator, returns the value stored at the address held by a pointer;
- p_Name: the name of the pointer variable. You can choose any valid variable name;
- nullptr: is a keyword that represents a null pointer, indicating that it is empty and doesn't point to anything.
Note
Commonly, pointers are named with a prefix p_ as a naming convention signifying that the variable is a pointer.
Tarefa
- Declare and initialize pointer with a nullptr.
- Display a pointer for a chosen primitive data type.
- Make sure its name has p_ prefix.
Once you've completed this task, click the button below the code to check your solution.
Obrigado pelo seu feedback!
A pointer is a variable that stores the memory address of another variable. It allows direct manipulation of memory, a powerful tool for dynamic memory allocation and efficient data manipulation.
Declaration and initialization of a pointer looks like this:
- int: specifies the base type of the variable that the pointer will point to. In this case, it's an integer;
- *: called dereference operator, returns the value stored at the address held by a pointer;
- p_Name: the name of the pointer variable. You can choose any valid variable name;
- nullptr: is a keyword that represents a null pointer, indicating that it is empty and doesn't point to anything.
Note
Commonly, pointers are named with a prefix p_ as a naming convention signifying that the variable is a pointer.
Tarefa
- Declare and initialize pointer with a nullptr.
- Display a pointer for a chosen primitive data type.
- Make sure its name has p_ prefix.
Once you've completed this task, click the button below the code to check your solution.