How to calculate the volume and surface area of the cylinder in C++?

C++ program to calculate the volume and Surface area of a cylinder,the program will take input such as radius,height and give output as volume.

#include<iostream.h>

#include <iomanip>

#include<math.h>

using namespace std;

const double PI = 3.14159;

int main ( )

{ 

double height;

double radius;

cout << "Enter the height of the cylinder: ";

cin >> height;

cout << "Enter the radius of the base of the cylinder: ";

cin >>radius;

cout << "Volume of the cylinder = " << PI * pow (radius, 2.0) * height << endl;

cout << endl;

cout << "Surface area: " << 2 * PI * radius * height + 2 * PI * pow (radius, 2.0) << endl;

cout << endl;

cout << fixed << showpoint << setprecision(2);

}