#include<math.h>
#include<stdio.h>
using namespace std;
int main()
{char n=0,cosx,x=0.3,a=0.0001;
while
(pow(x,n"+"1)/fact(2*n"+"2)<=a)
{cosx=cosx+pow(-1,n)*pow(x,n)/fact(2*n);
n++;
}
cout<<cosx<<endl;
system ("pause");
return 0;