Sequence points

[Sheky]

Hi,
consider this program:

#include<iostream>
using namespace std;
int main()
{
int i=0;
i= ++i + 1 + (i++*4);
cout<< i;
return 0;
}
how value of i will be calculated? what is the relation of
sequence point with this problem?

 

[Sheky]

so is it also undefined?
i=i++ +1;// it gives answer : i+2

explain more on sequence point. and same rule is with C also?