Which is an example of an incremental approach to solving a problem?

a. writing the program code of the solution informally

b. representing the steps of a solution in a flowchart

c. representing the code of the solution in different programming languages
d. writing the steps of a solution in small pieces of code

Melissa needs to add a topic to an email that she will send to her teacher. choose the name of the field where she should type her topic.

Pp 4.1 design and implement a class called sphere that contains instance data that represents the sphere’s diameter. define the sphere constructor to accept and initialize the diameter and include getter and setter methods for the diameter. include methods that calculate and return the volume and surface area of the sphere (see pp 3.5 for the formulas). include a tostring method that returns a one-line description of the sphere. create a driver class called multisphere, whose main method instantiates and updates several sphere objects.

Write a program that asks the user to enter the name of an input file. if the file does not exist, the program should prompt the user to enter the file name again. if the user types quit in any uppercase/lowercase combinations, then the program should exit without any further output.