Passing by Reference Vs. Passing by the pointer in C++

Throughout C++, it can transfer parameter values except by pointers or through referring to a function. For both cases, we have the same result. So the remaining statements are inevitable; when one is over the other significant? What are the causes we’re using one over another?

Passing by Pointer:

Output:

Passing by Reference vs Pointer in C++

Passing by Reference:

Output:

Passing by Reference vs Pointer in C++

The difference in between Reference variable and pointer variable

  • Generally, references are applied with pointers. A reference is the same object; it only has to refer to an entity with a different name and context. They are safer to use as references cannot be NULL.
  • A pointer may be reassigned while the relation cannot be assigned and must only be allocated at initialization.
  • The pointer is explicitly assignable to NULL, while reference cannot.
  • Pointers may append over an array, and we can use + + to move towards the next object a pointer points toward.
  • The variable is a way that has an address to the memory. A reference has the same address as the object it is referring to.
  • A class or struct pointer requires’ ->'(arrow operator) to reach its members while a reference uses a. ‘(dot operator)
  • To access the memory location it refers to, a pointer must be dereferenced with *, while a pointer can be substituted directly.

Output:

Passing by Reference vs Pointer in C++

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