如何打印此系列x-(x^3/3!)+(x^5/5!)-(x^7/7!)+...(x^n/n!)在C/C++中？

#include <iostream>
#include <cmath>

double calculateSeries(double x, int n) {
    double result = 0.0;
    double term = 1.0;
    int sign = 1;

    for (int i = 1; i <= n; i += 2) {
        term = pow(x, i) / tgamma(i + 1);
        result += sign * term;
        sign *= -1;
    }

    return result;
}

int main() {
    double x;
    int n;

    std::cout << "Enter the value of x: ";
    std::cin >> x;

    std::cout << "Enter the number of terms (n): ";
    std::cin >> n;

    double seriesResult = calculateSeries(x, n);

    std::cout << "Result: " << seriesResult << std::endl;

    return 0;
}