beginning student version of DrRacket

the Racket, as in Dr. Racket

1 Suns and planets Exercise 1 Develop a data definition Solar System that is either a sun or a planet. Your data definition should look like this: ; A SolarSystem is one of: To support this data definition, define a structure sun and a structure planet: A sun structure represents a solar system whose only object is a sun. It should contain no information other than the fact that it is a sun. (This structure is similar to the engine in Lab 4.) A planet structure represents a solar system whose outermost object is a planet. It should contain a distance to the next inner object, and should also contain the inner solar system. (This structure is like the train with a wagon that you defined in Lab 4.) Its inner solar system may be either another planet or a sun. (This inner system is like a train with a last wagon removed.) Exercise 2 Define three examples of SolarSystems. Exercise 3 Write the template process-solar-system for your data definition Solar System. 1 Suns and planets Exercise 1 Develop a data definition Solar System that is either a sun or a planet. Your data definition should look like this: ; A SolarSystem is one of: To support this data definition, define a structure sun and a structure planet: A sun structure represents a solar system whose only object is a sun. It should contain no information other than the fact that it is a sun. (This structure is similar to the engine in Lab 4.) A planet structure represents a solar system whose outermost object is a planet. It should contain a distance to the next inner object, and should also contain the inner solar system. (This structure is like the train with a wagon that you defined in Lab 4.) Its inner solar system may be either another planet or a sun. (This inner system is like a train with a last wagon removed.) Exercise 2 Define three examples of SolarSystems. Exercise 3 Write the template process-solar-system for your data definition Solar System