series sum

#include<iostream.h>
#include<conio.h>
#include<math.h>
long facto(int);
void main()
{
  clrscr();
  int num,n;
  int i=0;
  long j=0;
  int sum=0;
  cout<<"The series is:";
  cout<<"x/1!+x^2/2!+x^3/3!+............................";
  cout<<endl<<"Enter the number upto which you want the sum:";
  cin>>n;
  cout<<endl<<"The value of x:";
  cin>>num;
  for(i=1;i<=n;i++)
  {
   j=facto(i);
   sum=sum+pow(num,i)/j;
  }
  cout<<endl<<"The sum of the series is:"<<sum;
  getch();
}
long facto(int g)
{
  int k=1;
  while(g>0)
  {
   k=k*g;
   g--;
  }
}



























#include<iostream.h>
#include<conio.h>
#include<math.h>
long facto(int);
void main()
{
  clrscr();
  int num,n;
  int i=0;
  long j=0;
  int sum=0;
  cout<<"The series is:";
  cout<<"x/1!-x^2/2!+x^3/3!-............................";
  cout<<endl<<"Enter the number upto which you want the sum:";
  cin>>n;
  cout<<endl<<"The value of x:";
  cin>>num;
  for(i=1;i<=n;i++)
  {
   j=facto(i);
   if(i%2==0)
   sum=sum-pow(num,i)/j;
   else
   sum=sum+pow(num,i)/j;
  }
  cout<<endl<<"The sum of the series is:"<<sum;
  getch();
}
long facto(int g)
{
  int k=1;
  while(g>0)
  {
   k=k*g;
   g--;
  }
}