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C++ Pointers and References

bookAssigning Addresses to Pointers

When working with pointers, proper initialization is important to ensure they point to valid memory locations and prevent unexpected behavior.

Address-of and Dereference operators

To assign a value to the pointer we have to use address-of operator and to access the value of the memory address we have to use dereference operator.

  • &: the address-of operator, returns the memory address of its operand;

  • *: the derefence operator, returns the value that stored in the memory address.

main.cpp

main.cpp

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12345678

            
#include <iostream>

int main()
{
	int variable = 10;
	std::cout << &variable << std::endl;
	std::cout << *(&variable) << std::endl;
}

Using the address-of operator, we can assign these addresses to pointers, creating a direct link between the pointer and the memory location it points to.

Taak

Swipe to start coding

  1. Declare a pointer with an appropriate data type.
  2. Initialize it with a variable memory address.
  3. Output both the memory address the pointer points to and the value it holds.

Oplossing

solution.cpp

solution.cpp

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bookAssigning Addresses to Pointers

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When working with pointers, proper initialization is important to ensure they point to valid memory locations and prevent unexpected behavior.

Address-of and Dereference operators

To assign a value to the pointer we have to use address-of operator and to access the value of the memory address we have to use dereference operator.

  • &: the address-of operator, returns the memory address of its operand;

  • *: the derefence operator, returns the value that stored in the memory address.

main.cpp

main.cpp

copy

              
12345678

            
#include <iostream>

int main()
{
	int variable = 10;
	std::cout << &variable << std::endl;
	std::cout << *(&variable) << std::endl;
}

Using the address-of operator, we can assign these addresses to pointers, creating a direct link between the pointer and the memory location it points to.

Taak

Swipe to start coding

  1. Declare a pointer with an appropriate data type.
  2. Initialize it with a variable memory address.
  3. Output both the memory address the pointer points to and the value it holds.

Oplossing

solution.cpp

solution.cpp

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Was alles duidelijk?

Hoe kunnen we het verbeteren?

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Completion rate improved to 5.88
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