C Program to find the sum of following series 1 - X1/1! + X2/2! - ………… Xn/n!

#include <math.h>
	
int fact(int x)
	{
		if(x ==1)
		return 1 ;
		else 
	    return x * fact(x - 1);
	}
	
	double series(double x , int n)
	{
		double sum = 1 ;
		for(int i = 1 ; i <= n ; i++)
		{
			if(i%2 != 0)
		{
			
			sum = sum - (pow(x,i)/fact(i));
		
		}
		else 
		{
			sum = sum + (pow(x , i )/fact(i));
		}
		}
	
	return sum ;
	}
	



	int main()
	{
		double x ;
		int n;
		
	printf("Enter the value of x : ");
	scanf("%lf" , &x );
	printf("Enter the value of n : ");
	scanf("%d" , &n);
	
	printf("Sum of the given series is : %.4lf\n" , series(x,n));
    }