Windows on the desktop are just one of many objects used in a graphical user interface ( buttons, drop-down list boxes, pop-up menus, are just some of the many others. regardless of their particular appearance, tasks, and structure, all such gui components share some common functionality-- which is handled in a manner unique to the actual component. define an interface, guicomponent, with the following methods: (a) onclick-- void-returning and accepts a single integer parameter(b) oncursorfocus -- void-returning and accepts a single integer parameter(c) move -- 3 overloaded methods: all boolean-returning; one accepts a pair of integer parameters; the seconda single parameter of type position; the third a single parameter of type dimension(d) resize-- boolean-returning and accepts a pair of integer parameters

Draw the hierarchy chart and design the logic for a program that calculates service charges for hazel's housecleaning service. the program contains housekeeping, detail loop, and end-of-job modules. the main program declares any needed global variables and constants and calls the other modules. the housekeeping module displays a prompt for and accepts a customer's last name. while the user does not enter for the name, the detail loop accepts the number of bathrooms and the number of other rooms to be cleaned. the service charge is computed as $40 plus $15 for each bathroom and $10 for each of the other rooms. the detail loop also displays the service charge and then prompts the user for the next customer's name. the end-of-job module, which executes after the user enters the sentinel value for the name, displays a message that indicates the program is complete.

Two technicians are discussing the common u-joint. technician a says its input and output speeds should be equal. technician b says that it normally has two yokes. which technician is correct?

Self contained sequences of actions to be performed are? a. expressions b. algorithms c. functions d. formulas