Meant to create a blog a few days ago, but I delayed, today finally decided to finish it before bed,
Start to learn c + +
Bosses don't spray
This is the recent practice of

# include
#include
#include
using namespace std;
Int main ()
{
Double PI=0;
Double n=1, f=1;
While (fabs (f/n) & gt; E=1-8)
{
PI=PI + f/n.
N=n + 2;
F=1 * f;
}
PI=PI * 4;
Cout<& lt;" PI material & lt; "" return 0;