Write a C$++$ program to calculate diameter, area and circumference of any circle. Your program

should ask the user to enter the radius of a circle and then calculate and display the result on the

screen as follow:

Formula:

$\backslash$pi $=3\mathrm{.}14$

Diameter $=2*$ radius

Circumference $=2*\backslash$pi $*$ radius

Sample Output: Red colored texts are user inputs. Other texts are the output of the program.

Please enter a value for the radius of a circle:

$10$

Diameter $=20$

Area $=314$

Circumference $=62\mathrm{.}8$