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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[pi] times the radius, or about 2 times 3.141592654 .

  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 then prints out the result of the two numbers multiplied together.

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