need a parse tree

[mitchneys]

hello help me...i need to create a parse tree with this source code:
#include <iostream.h>
int main()
{
int x,y;
double ave;
cout<<"Enter first number";
cin>>x;
cout<<"Enter second number";
cin>>y;
ave=(x+y)/2;
cout<<"The average is"<<ave;
return 0;
}