How to find the problem of converting Python math to C++

I want to convert Python to C++, but the answer is not correct. I'm trying to find the problem, but I couldn't. The code written for C++ works but does not give the correct answer.

  ‍‍‍‍‍‍import math
    i=0
    x=float(3)
    while i==0:
        h = float(((x**2)+1)/((math.log((x**2)+1))))
        y = float(((((x**2)+1)**(1/h))))
        s = float(((((x**2)+(4*x)+3)/((x**2)+1))))
        print(" ---- ",x," ---- ",format(((s**100)-(y**100)), '.100f'))
        x=(1.001)*x
    if (s-y)<0:
        i=1
        print("the end")

/////////////////////////////////////

int i=0;
math::softfloat::float64_t x = 3.00;
while(i==0)
{
   math::softfloat::float64_t h = ( math::softfloat::pow(x,2)+1)/ 
   math::softfloat::log(math::softfloat::pow(x,2)+1);
   math::softfloat::float64_t y1 = math::softfloat::pow(x,2)+1;
   math::softfloat::float64_t y =  math::softfloat::pow(y1,(1 / h));
   math::softfloat::float64_t s = (math::softfloat::pow(x,2)+(4 * x)+3) / 
                                   (math::softfloat::pow(x,2)+1);

   cout << "----" <<setprecision(15)<< x << "----" ;
   cout << setprecision(4) << (math::softfloat::pow(s,100) - 
                               math::softfloat::pow(y,100))<<endl;
    x *= (1.001);
    if(s - y < 0) i =1;
}