Difference between virtual function and inline function in C++

Virtual function:Virtual function is a member function which is declared within a base class and is redefined by a derived class.

Inline function:Inline function is a normal function which is defined by the keyword inline, it is a short function which is expanded by the compiler and its arguments are evaluated only once.

The syntax of defining the function inline in C++ is:

inline return-type function-name(parameters)
{
    // function code
} 

Difference between virtual function and inline function are as follows:

Virtual function

Inline function

1. Virtual function must be declared in public section of class.1. Inline function is a normal function which is defined by the keyword inline.2. Virtual function cannot be static.2. Inline function can also be non-static.3. Virtual function is defined in base class.3. Inline function are the short length functions that are automatically made the inline functions without using the inline keyword inside the class.4.

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Difference between virtual function and inline function in C++

Virtual function:Virtual function is a member function which is declared within a base class and is redefined by a derived class.

Inline function:Inline function is a normal function which is defined by the keyword inline, it is a short function which is expanded by the compiler and its arguments are evaluated only once.

The syntax of defining the function inline in C++ is:

inline return-type function-name(parameters)
{
    // function code
} 

Difference between virtual function and inline function are as follows:

Virtual function

Inline function

1. Virtual function must be declared in public section of class.1. Inline function is a normal function which is defined by the keyword inline.2. Virtual function cannot be static.2. Inline function can also be non-static.3. Virtual function is defined in base class.3. Inline function are the short length functions that are automatically made the inline functions without using the inline keyword inside the class.4.

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C++ Inline Functions Example | Inline Functions In C++

C++ Inline Functions Example | Inline Functions In C++ is today’s topic. Inline functions are a great way to define small functions whose execution time is less than the time it takes to transit the control from the called function to the calling function. Inline function substitutes the function code that is to be executed in the main program code itself in the place where it is called. So it automatically eliminates the time it takes to switch the control from the called function to the main program, making the whole program much more efficient.

C++ Inline Functions

See the following syntax.

inline return_valuetype function_name()
{
  //function definition;
}

See the following code example.

inline int add(int a, int b)
{
  int sum=0;
  sum=a + b;
  return sum;
}

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The Difference Between Regular Functions and Arrow Functions in JavaScript

Other then the syntactical differences. The main difference is the way the this keyword behaves? In an arrow function, the this keyword remains the same throughout the life-cycle of the function and is always bound to the value of this in the closest non-arrow parent function. Arrow functions can never be constructor functions so they can never be invoked with the new keyword. And they can never have duplicate named parameters like a regular function not using strict mode.

Here are a few code examples to show you some of the differences

this.name = "Bob";
const person = {

name: “Jon”,
<span style="color: #008000">// Regular function</span>
func1: <span style="color: #0000ff">function</span> () {
    console.log(<span style="color: #0000ff">this</span>);
},

<span style="color: #008000">// Arrow function</span>
func2: () =&gt; {
    console.log(<span style="color: #0000ff">this</span>);
}

}
person.func1(); // Call the Regular function

// Output: {name:“Jon”, func1:[Function: func1], func2:[Function: func2]}
person.func2(); // Call the Arrow function

// Output: {name:“Bob”}

The new keyword with an arrow function

const person = (name) => console.log("Your name is " + name);
const bob = new person("Bob");
// Uncaught TypeError: person is not a constructor

If you want to see a visual presentation on the differences, then you can see the video below:

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Virtual Function in C++ Example | C++ Virtual Function Tutorial

C++ virtual function is a member function that is declared in the base class and redefined by a derived class. The virtual function is used to tell the compiler to perform dynamic linkage or late binding (means, the compiler determines the type of object it is having and then it binds the function call) on the function. We have to create a  pointer to the base  class, and then that pointer refers to the object of the derived class.

Virtual Function in C++

Polymorphism refers to a property by which objects belonging to a different class can respond to the same message but in various forms. When there are C++ functions with the same name in both superclass as well as a subclass, virtual functions gives programmer capability to call a member function of a different class by the same function call based upon different context.

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How to implement Inline functions in C++?

Hey, folks! In this article, we will be unveiling a very powerful function offered by Inline functions in C++ .

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