An astronomy application displays information about the eight planets in our sol
ID: 3605889 • Letter: A
Question
An astronomy application displays information about the eight planets in our solar system. Write the logic for this application in pseudocode:
a. Visit this web page: https://sciencing.com/order-planets-distance-sun8371065.html
b. Note down each planet’s name, distance from the sun, and diameter
c. Write the program such that it:
i. Displays a numbered list of the planets that includes 1. Planet number (1 is the planet closest to the sun and 8 is the one farthest from it) 2. Planet’s name 3. Distance from the sun 4. Diameter Here is a sample of the required format of output: Planet #1: Mercury is 36 million miles from the sun and has a diameter of 3031 miles
ii. Allows the user to enter the number of any planet, and displays output similar to that shown above, for that planet, e.g., if the user entered 1, the output would be the sentence shown above. If the user enters an invalid planet number, such as zero or 9, the program must display an error message.
iii. Allows the user to enter the numbers of any two planets, and outputs both their names as well as their distance from each other. If the user enters an invalid planet number, such as zero or 9, the program must display an error message.
Note: (ii) and (iii) above must be accomplished without any search being performed
Explanation / Answer
Below is pseudocode to get details about planet.
//create class with variables for planet details
Class Planet {
order,
name,
distance,
diameter
}
//Create array of object of above class
Planet [] obj = new Planet[8];
//add planet details in array as
obj[0].order = 1;
obj[0].name = “marcury”;
obj[0].distance = 36;
obj[0].diameter = 3031;
obj[1].order = 2;
.
.
.
//Now to print planet information sequentially, iterate over array of object as
start from variable i=0 to i< size of obj, increment i
(print obj[i].name + “is” + obj.distance + “ million miles from the sun and has a diameter of” + 3031 + “miles.”);
//To find information about particular planet
get planet number say variable num.
iterate over array
start from variable i=0 to i< size of obj, increment i
If obj[i] = num then
(print obj[i].name+ “is” + obj.distance + “ million miles from the sun and has a diameter of” + obj[i].diameter + “miles.”);
Else
print error message
//To find distance between two planets
get planet numbers say variable num_1, num_2.
start from variable i=0 to i< size of obj, increment i
If obj[i] = num_1 then
start from variable j=0 to j< size of obj, increment j
if obj[j] = num_2 then
print“Planet”+ obj[i].name + “is distant from” + obj[j].name + “by” + (obj[i].distance – obj[j].distance);
Else
print error message
Else
print error message