Write a C++ program to demonstrate inline function

Write a C++ program to demonstrate inline function .  

Inline Functions

                C++ inline function is powerful concept that is commonly used with classes. If a function is inline, the compiler places a copy of the code of that function at each point where the function is called at compile time.

                To inline a function, place the keyword inline before the function name

 Syntax :-

               inline Return type function_name()

               {

                               //Function body

               }

Why use Inline function

                Whenever we call any function many time then, it take a lot of extra time in execution of series of instructions such as saving the register, pushing arguments, returning to calling function.

Advantage of inline Function

                The main advantage of Inline function is it makes the program faster.

Code :-

#include <iostream.h>

#include<conio.h>



inline int Max(int x, int y)

{

                return (x > y)? x : y;

}



// Main function for the program



int main( )

{

                clrscr();

                int n1=10,n2=20,ans;

                cout << "Number 1 :- " << n1<< ",  Number 2 :- " << n2<<endl;;

                ans=Max(20,10);

                cout << "Greater Number is :- " << ans ;

                getch();

} */

/*

 Output :-

 Number 1 :- 10, Number 2 : 20

 Greater Number is :- 20

*/

Output :-

 Output :-

 Number 1 :- 10, Number 2 : 20

 Greater Number is :- 20

  we can define menber function out side the calss definition and still make it inline by just using the qualifier inline in the header line of function definition.

Code :-

#include <iostream.h>

#include<conio.h>

class math

{

                int no;

                public:

                inline int cube(int a)

                {

                                return (a*a*a);

                }

} ;

void main()

{

                clrscr();

                int n1;

                math m1;

                cout<<"Enter The Nmuber :- ";

                cin>>n1;

                int ans=m1.cube(n1);

                cout<<"Cube of Number is = "<<ans;

                getch();

}

/*
**********************************************


 Output :-

 Enter The Number :- 2

 Cube of Number is = 8



***********************************************/

Output :-

 Enter The Number :- 2

 Cube of Number is = 8