FactSum12.cpp

#include "pch.h"
#include <stdio.h>
#include <windows.h>
#include <math.h>

double myFact(int n);

int main()
{
	SetConsoleOutputCP(1251);
	SetConsoleCP(1251);

	float x;
	float first;
	int m;
	double bottom, sum = 0, fac;

	printf("Введите x и m: \n");
	scanf_s("%f%i", &x, &m);

	for (int n = 3; n <= m + 3; n++) {
		first = pow(x, n + 2);
		printf("First: %.30f \n", first);
		fac = myFact(2 * n - 3);
		printf("fac: %.f \n", fac);
		bottom = exp(x) + x;
		printf("bottom: %f \n", bottom);
		sum += first * fac / bottom;
		printf("Промеж. сумма: %.20f \n", sum);
	}

	printf("Сумма: %.20f \n", sum);

	return 0;
}

double myFact(int n) {
	double result = 1;
	if (n == 0) { return result; }
	for (int i = 1; i <= n; i++)
	{
		result *= i;
	}
	return result;
}