#include<iostream.h>
#include<conio.h>
#include<fstream.h>
int DoFact(int x)
  {
  float y, s;
  if(x==0) return(1);
  else for(y=1; y<=x; y++){s+=y;}
  return(s);
  }
void main()
 {
 clrscr();
 int n, a;
 float e, z;
 int DoFact(int);
 ofstream ofs("D:\\WORK\\EylerNumber.TXT");
 ofs<<" n    e"<<endl;
 while(1)
  {
  cout<<"How many members are there in the expression?"<<endl;
  cin>>n;
  e=0;
  z=0;
  for(a=0; a<=n; a++)
   {
   z=DoFact(a);
   e+=1/z;
   }
  cout<<"Eyler's number is equal to "<<e<<" when expression has "<<n<<" members."<<endl;
  ofs<<" "<<n<<"    "<<e<<"         "<<endl;
  cout<<"Continue counting?\n1)Yes\n2)No"<<endl;
  cin>>a;
  if(a==1) continue;
   else if(a==2){getch(); break;}
    else {cout<<"ANTA BAKA!!!:_:"<<endl; getch(); break;}
  }
 }

#include <iostream>
using namespace std;

int Factorial(int n)
{
    if (!n)
        return 1;
    return n*Factorial(n-1);
}

void main()
{
    int i;
    float e;
    cout << "How many members are there in the expression?" << endl;
    while(1)
    {
        e = 0;
        for (cin >> i; i >= 0; i--)
            e += 1/(float)Factorial(i);
        cout << e << endl;
    }
}

bool bPaused = false;
while GetMessage(&msg)
{
  // Process message
  if msg == MSG_EXIT
    break;
  if bPaused OR (msg == MSG_PAUSE)
  {
    bPaused = (!bPaused) AND (msg != MSG_UNPAUSE);
    Sleep(0);
    continue;
  }
  // Iterate code
}

friend Abc operator+(Abc a1, Abc a2);