an equation in c language

liquid sky · 03-22-2004, 01:06 PM

hi
I wish if there is any body that can help me
i need to program a simple C program that estimates the value of e

e=1+1/1!+1/2!+1/3!.........etc.

any body can help me???

kev82 · 03-22-2004, 01:37 PM

this sounds a bit like a homework question...

if thats the case then accuracy isnt of a great concern, the most obvious solution is to use the formula you state above, sum the value of 1/(n!) as n goes from 0 to a high number.

this is quite simple to implement in a for loop but i'll leave it fot you to have a go at cos i dont wanna give away answers to homework if you need more help post back

aaa · 03-22-2004, 01:38 PM

a for-loop with a factorial algorithim

Code:

int e;
for(int i=0;i<=[number of terms you want to go up to];i++)
    e += (1 / factorial(i));

Make the factorial function yourself.

kev82 · 03-22-2004, 01:45 PM

aaa - you might want to use a different type than int for e, also declaring i inside the for loop is not valid in C

aaa · 03-22-2004, 02:00 PM

yeah, use float or double.

liquid sky · 03-22-2004, 02:25 PM

thanks alot i was only lookin for the idea to solve it