Write a program in C++ to calculate the value of exp(r) in 0.1 increments from r = 0 to 2.0.

#include <iostream>
#include <math.h>       /* exp */
using namespace std;

int main ()
{
  double r;
  double x;
  for (r=0;r<=2;r=r+0.1)
    {
        x=exp(r);
        cout <<"The exponential value of "<< r <<" is "<< x << endl;
    }
  return 0;
}