Write A C++ Program To Find The Sum Of All Even Numbers From 0 To 20 Using Function Recursion.

#include<iostream.h> 
 #include<conio.h> 
 void main() 
 { 
       int total,sum(int); 
       clrscr(); 
       total=sum(2); 
       cout<<"Sum Of All Even Numbers From 0 To 20 : "<<total; 
       getch(); 
 } 
         int sum(int i) 
          { 
             static int even=0; 
             if(i<=20) 
              { 
                  even=even+i; 
                  sum(i+2); 
               } 
             return even; 
           }