[Chapter 2] 2.10 Exercises
Author: Randal Schwartz, Tom Christiansen & Larry Wall
Date: 1999-07-02T01:32:00Z

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| Chapter 2 Scalar Data |

## 2.10 Exercises

See Appendix A, Exercise Answers for answers.

1. Write a program that computes the circumference of a circle with a radius of `12.5`. The circumference is 2 times the radius, or about `2` times `3.141592654` times the radius.

2. Modify the program from the previous exercise to prompt for and accept a radius from the person running the program.

3. Write a program that prompts for and reads two numbers, and prints out the result of the two numbers multiplied together.

4. Write a program that reads a string and a number, and prints the string the number of times indicated by the number on separate lines. (Hint: use the "`x`" operator.)

2.9 The Undefined Value |  | 3. Arrays and List Data