Using the inline function in C++ programming


Compiler: Visual C++ Express Edition 2005

Compiled on Platform: Windows XP Pro SP2

Header file: Standard

Additional project setting: Set project to be compiled as C++

Project -> your_project_name Properties -> Configuration Properties -> C/C++ -> Advanced -> Compiled As: Compiled as C++ Code (/TP)

Other info: none

To do: Doubling the given integer to demonstrate the inline function in C++ programming

To show: How to declare, define and use the inline functions in C++ programming




// demonstrates the inline functions

#include <iostream>

using namespace std;


// inline function, no need a prototype here, we directly declares and defines the function

inline int Doubler(int target){return (2*target);}


int main(void)


int target;


cout<<"Enter a number to work with: ";




// function call

target = Doubler(target);

cout<<"\nFirst time function call, Target: "<<target;


// function call

target = Doubler(target);

cout<<"\nSecond time function call, Target: "<<target;


// another call

target = Doubler(target);

cout<<"\nThird time function call, Target: "<<target<<endl;


return 0;



Output example:


Enter a number to work with: 100

First time function call, Target: 200

Second time function call, Target: 400

Third time function call, Target: 800

Press any key to continue . . .



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