C++ programme to find the sum of sequence 1 + 1/1! + 1/2!+.........

#include<iostream.h>

#include<conio.h>

void main()

{

int n,i;

float sum=1.00;

float fact(int a);

clrscr();

cout<<"Enter n:";

cin>>n;

for(i=1;i<n;i++)

{

sum+=(1/fact(i));

}

cout<<"Sum of series ="<<sum;

getch();

}

float fact (int a)

{

int f=1,i;

for (i=1;i<=a;i++)

f*=i;

return f;

}

OUTPUT:

Enter n : 5

Sum of series =2.708333