WRITE A C PROGRAM TO SUM THE SERIES:

/* WRITE A C PROGRAM TO SUM THE SERIES:

                                                   x       x^2     x^3

                                e^x = 1 + ----- + ----- + ----- + ...

                                                   1!        2!       3!          */

#include<stdio.h>

#include<conio.h>

#include<math.h>

#define PI 3.143

long int fact(int n)  /* To find factorial */

{

            if(n==0)

                        return 1;

            else

                        return(n*fact(n-1));

}

void main()

{

            int i,n,term=1;

            float x,y,sum;

            clrscr();

            printf("\n Enter No. of Terms N [1-12] : ");

            scanf("%ld",&n);

            if(n>=1 && n<=12)

            {

                        printf("\n Enter the Value of 'X' in degrees : ");

                        scanf("%f",&y);

                        x=y*(PI/180.00); /* Converting degrees to radians */

                        sum=1;

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

                        {

                                    sum+=pow(x,i)/(float)fact(i);

                                    term++;

                        }

                        printf("\n e^%.2f = %f",y,sum);

            }

            else

                        printf("Wrong entry!!!");

            getch();

}

/*         =====OUT PUT=====

       1.Enter No. of Terms N [1-12] : 8

             Enter the Value of 'X' in degrees : 60

             e^60.00 = 2.850986

       2.Enter No. of Terms N [1-12] : 12

             Enter the Value of 'X' in degrees : 90

             e^90.00 = 4.813863

       3.Enter No. of Terms N [1-12] : 9

             Enter the Value of 'X' in degrees : 0

             e^0.00 = 1.000000