sada

Write a program that reads in the radius of a circle and prints the circle’s diameter, circumference and area. Use the constant value 3.14159 for π. Perform each of these calculations inside the printf statement(s) and use the conversion specifier %f. [Note: In this chapter, we’ve discussed only integer constants and variables. In Chapter 3 we’ll discuss floating-point numbers, i.e., values that can have decimal points.]