#include<stdio.h>
int main()
{
	int n,i,j;
	float x,sum,den,num;
	printf("Enter value of x: ");
	scanf("%f",&x);
	printf("Enter value of n: ");
	scanf("%d",&n);

	sum = 0;
	for(i=0;i<n;i++)
	{
		num = 1;
		den = 1;
	
		for(j=0;j<i;j++)
			num = num * x;

		for(j=0;j<i;j++)
			den = den * (j+1);
		//printf("%f %f %f\n",num,den,sum);
		sum = sum + num/den;
	}

	printf("Value of exp(%f) = %.10f\n",x,sum);
}