自然指數

#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <stdio.h>//header standard Input/ouput
#include<stdbool.h>
#include<assert.h>


int main()
{
	double x = 1;
	int n = 10;
	float e = 1;
	float xpower = 1;
	int factorial = 1;

	double term = 1;

	for (int i = 1;i <= n;i++) {
		term = term * (x/i);
		e += term;
	}
	printf("%f\n", e);
}