Inline Function Example in C++


Description:

The inline functions are a C++ enhancement feature to increase the execution time of a program. Functions can be instructed to compiler to make them inline so that compiler can replace those function definition wherever those are being called.

Example Program:

Find out the area of rectangle using inline function in C++

Source Code

#include<iostream>
using namespace std;
class Rectangle
{
private :
    int length;
    int breadth;
public :
    Rectangle(int l=0,int b=0) 
    {
        length=l;
        breadth=b ;
    }
    int area()  //Inline Function
    {
        return length*breadth;
    }
    inline int perimeter();

};
int Rectangle::perimeter()  
{
    return 2*(length+breadth);
}
int main()
{
    Rectangle r(10,5);

    cout<<"Area : "<<r.area();
    cout<<"perimeter : "<<r.perimeter();
    return 0;
}

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Output

Area : 50perimeter : 30

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