inline in class in C++

The "inline" keyword in C++ is used to define a function or a member function inside a class. When a function is declared as inline, the compiler replaces the function call with the actual code of the function, instead of generating a separate function call instruction.

Here are the steps to use the "inline" keyword in a class in C++:

1. Declare the function inside the class: Start by declaring the function inside the class definition. For example, if you have a class named "MyClass", you can declare an inline member function named "myFunction" like this:

class MyClass {
public:
    inline void myFunction();
};

1. Define the function inline: After declaring the function inside the class, you need to define the function inline. This means that the function's code is written directly inside the class definition. For example, the definition of the "myFunction" member function can be written as follows:

void MyClass::myFunction() {
    // Function code goes here
    // ...
}

1. Use the inline function: Once the function is declared and defined inline, you can use it like any other member function of the class. For example, you can create an object of the class and call the inline function on that object:

MyClass obj;
obj.myFunction(); // Call the inline function

Note: The use of the "inline" keyword is a hint to the compiler to perform inline expansion of the function. However, the compiler may choose not to inline the function if it determines that it is not beneficial. The decision to inline a function is ultimately up to the compiler.