Hi Guys,
Have been working on an online stochastic calculus course covering "Stochastic Calculus for Finance Vol 1 & 2" by Steve Shreve. Those of you who are new to the subject may find it useful. Check out https://finmath.vhx.tv
void Circle::area()
{
float x;
x = 22/7.0*radius*radius;
cout<<x;
}