Thread: Help!!

i've just started learning C language from two weeks ago (and its the first programming language that i learn!!)
i have to do the following assignment:
Write a program that computes the value of e^x by using the formula:
e^x = 1 + x/1! + x^2 / 2! + x^3 / 3! +.......

i wrote the following program but i keep receiving error!

#include <stdio.h>
#include <math.h>
int main ()
{
float x, result,fact=1; int power=0,a=1;
printf ("Enter the value of X");
scanf ("%f",&x);
result= 0;
fact=power;
while (power <= 3){
++power;

while ( (power-a) >= 1){
fact= fact * (power-a);
++a;
}
result = (result + pow(x,power)) / fact;
if (power >= 3) {
printf ("the result is %f",result + 1);
break;
}
}
return 0;
}

thanx for any help and sorry for my bad english.

its me again!
i receive the following error:
The exception Floating-point division by zero.
(0xc0000008e) occured in the application at location 0x004011d6

i am using Borland C++ Builder 5.5
thanx for trying to help me.

i changed power=0 to power=1 and now it works fine, but the output is wrong!!!!
please HELP!

>result= 0;
>fact=power;

Now fact == 0.

>while (power <= 3){
>++power;
>while ( (power-a) >= 1){
>fact= fact * (power-a);
>++a;
>}

Here fact == 0, since 0 * A = 0, whatever the value of A is.

>result = (result + pow(x,power)) / fact;

This all results in a division by 0.