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Introduction to Pointer | Pointers Fundamentals
C++ Pointers and References
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C++ Pointers and References

C++ Pointers and References

1. Pointers Fundamentals
2. Pointer Arithmetic
3. References Fundamentals
4. Dynamic Memory Allocation

bookIntroduction 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.

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Seção 1. Capítulo 1
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bookIntroduction 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.

Switch to desktopMude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixo
Tudo estava claro?

Como podemos melhorá-lo?

Obrigado pelo seu feedback!

Seção 1. Capítulo 1
toggle bottom row

bookIntroduction 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.

Switch to desktopMude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixo
Tudo estava claro?

Como podemos melhorá-lo?

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.

Switch to desktopMude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixo
Seção 1. Capítulo 1
Switch to desktopMude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixo
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