Right Handle of Array Point with function

array_point_func.cpp

#include <iostream>

// Return vector y = x * x
void manipulate(double *y, double *x, size_t n){
  /* x and y must be initialized! */
  std::cout << "Inside the function" << std::endl;
  std::cout << "Size of x?: " << 
            sizeof(x) << " " 
            << "Size of y?: " 
            <<sizeof(y) 
            << std::endl;
  for (size_t i=0; i< n; ++i)
    y[i] = x[i] * x[i];
}

int main() {
  double y[5];
  double x[5] = {1.0, 2.0, 3.0, 4.0, 5.0};
  std::cout << "In the main function" << std::endl;
  std::cout << "Size of x?: " << sizeof(x) << " " 
  << "Size of y?: "<< sizeof(y) 
            << std::endl;
  manipulate(y, x, 5);
  std::cout << "x is:" << std::endl;
  for (size_t i=0; i< 5; ++i)
    std::cout << x[i] << " ";
  std::cout << std::endl;
  std::cout << "y is:" << std::endl;
  for (size_t i=0; i< 5; ++i)
    std::cout << y[i] << " ";
  std::cout << std::endl;
  return 0;
}