[情報] 請用(有點慢了)

[suemincheung (銘銘)]

#include<iostream>
#include<time.h>
#include<cmath>
using namespace std;

double Uni_ran()
{
  return (1.0+rand())/32769.0;
}

double Ber_ran(double p)
{
  double U=Uni_ran();
  if(U<p)
  {return 1.0;
  }else{return 0.0;
        }
}

double Bin_ran(double n,double P)
{
 double x=0.0;
 for(double j=0;j<n;j++)
  {
  x=x+Ber_ran(P);
  }
return x;
}
double Pos_ran(double L)
{

return Bin_ran(300,L/300);
}
int main()
{
 srand((unsigned)time(NULL));
 cout.setf(ios::fixed);
 cout.precision(1);

   for(int i=0;i<100;i++)
   {
   cout<<Pos_ran(5)<<"  ";
   }

 cin.get();
 return 0;
}

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