[閒聊] 程設 程式碼

[freelysoul (帥氣小活寶)]

#include <C:\devcpp\all.h>

double F1( double x )
{
  return t_den(x,5);
}

double sample_mean( Univar Y )
{
       double sum = 0.0;
       for(int i=0; i <Y.size(); i++)
       {sum = sum + Y[i];
        }
        return sum / Y.size();
        }
        double sample_var( Univar Y )
        {
               double Y_bar = sample_mean(Y);
               double SS  = 0.0;
               for(int i =0; i < Y.size(); i++)
               {  SS = SS + pow(Y[i]-Y_bar,2.0);
               }
               return SS/(Y.size()-1);
               }

int main()
{
  long int i, j;
  srand((unsigned)time(NULL));
  cout.setf(ios::fixed);  cout.precision(10);


// $$$$$$$$  Start your program here $$$$$$$$$$$$$$$$$$$$$


   Univar X(10);
   X.nor_ran(0,1);
   X.print(2);
  cout << sample_mean(X) << endl;
  cout << X.mean() << endl;
  cout << sample_var(X) << endl;
  cout << X.variance() << endl;



// $$$$$$$   End of your program $$$$$$$$$$$$$$$$$$$$$$$$$


  cin.get();
  return 0;
}

/*
  cout << "Welcome to  ....." << endl;
  cout << "      TIMING" << endl;
  cout << "This is a interface developed by C++" << endl;
  cout << "for Statistical and numerical computation" << endl;
  cout << "This is a free software !! " << endl;
  cout << "Anyone can use this interface ! " << endl;
  cout << "Selling this interface is absolutly prohibited !" << endl;
  cout << "       Copyright  by" << endl;
  cout << "Lee, Tai-Ming   2009  2/15" << endl;

*/

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