(Diameter, Circumference and Area of a Circle) Write a program that reads in the radius of a circle as an integer and prints the circle’s diameter, circumference and area. Use the constant value 3.14159 for ?. Do all calculations in output statements. [Note: In this chapter, we have discussed only integer constants and variables. In Chapter 3 we discuss floating-point numbers, i.e., values that can have decimal points.]

What will be an ideal response?


```
(Diameter, Circumference and Area of a Circle) Write a program that reads in the radius of
a circle as an integer and prints the circle’s diameter, circumference and area. Use the constant value
3.14159 for ?. Do all calculations in output statements. [Note: In this chapter, we have discussed
only integer constants and variables. In Chapter 3 we discuss floating-point numbers, i.e., values
that can have decimal points.]
cout << "Diameter is " << radius * 2.0
<< "\nCircumference is " << 2 * 3.14159 * radius
<< "\nArea is " << 3.14159 * radius * radius << endl;
} // end main
```

Computer Science & Information Technology

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