// 5. x + x3/3! + x5/5! +…+ x2n-1/(2n-1)! (sh(x))
#include <stdlib.h>
#include <stdio.h>
#include <math.h>

double sh(double, double, int&);

void main() {
    double x = 0, eps = 0.0001;
    int n = 0;
    printf("x\tSh(x) from math.h\tSh(x) from custom function\n\n");
    for (x = 0.1; x<1; x+=0.1) {
        printf("%.2f\t", x);
        printf("%.4f  \t\t", sinh(x));
        printf("%.4f\n", sh(x, eps, n));
    }
}

double sh(double x, double eps, int &n) {
    double sum = 0, cur = x;
    n = 2;
    while (cur >= eps) {
        sum+=cur;
        cur *= x*x/(4*n*n - 6*n + 3);
        n++;
    }
    return sum;
}