Лев лови

double f(double x, double e,double Nm, ::System::Windows::Forms::ListBox^ LB)
{
    int n=0;
    double s=0;
    double a=1;
    while (fabs(a)>e && n<=Nm)
    {
        System::String^ outs = System::String::Format("    {0,2:D2}             {1,15:F9}             {2,15:F9}",n,a,s);
        LB->Items->Add(outs);
        s=s+a;
        a=a*x/n;
        n++;
    }
    return s;
}