Classes and Objects1

Prime b

Create a class named HousePlant. A HousePlant has fi elds for
a name (for example, "Philodendron"), a price (for example,
29.99), and a value indicating whether the plant has been
fed in the last month (for example, true). Include properties
that contain get and set accessors for each fi eld. Create
a class named DisplayHousePlants that instantiates three
HousePlant objects. Demonstrate the use of each property for
each object. Save the fi le as DisplayHousePlants.cs.

This is what I have done

namespace DisplayHousePlants
{
class HousePlant
{
string plantName;
double plantPrice;
bool fed;

public string PlantName
{
get
{
return plantName;
}
set
{
plantName = value;
}
}
public double PlantPrice
{
get
{
return plantPrice;
}
set
{
plantPrice = value;
}
}
public bool Fed
{
get
{
return fed;
}
set
{
fed = value;
}
}
}
*************************************************************

namespace DisplayHousePlants
{
class DisplayHousePlants
{
public void FlowerMessage(string[] args)
{
HousePlant flower1 = new HousePlant();
flower1.PlantName = "Jelly Bean Plant";
flower1.PlantPrice = 12.99;
flower1.Fed = true;

HousePlant flower2 = new HousePlant();
flower2.PlantName = "Bonsai";
flower2.PlantPrice = 39.99;
flower2.Fed = true;

HousePlant flower3 = new HousePlant();
flower3.PlantName = "Aloe";
flower3.PlantPrice = 9.99;
flower3.Fed = false;

}

}

But I don't know how to display what I have in DisplayHousePlant class........... How do i get it to display?

3 Replies

Know the answer? Post it — somebody with the same question will find it here.

Vulpes14y ago
Accepted answer
A neat way to display details about a class is to override the ToString() method which all classes inherit from System.Object.

Console.WriteLine() asutomatically applies the ToString() method to any arguments which are not strings.

I've changed the FlowerMessage() instance method to a static Main() method so that the program will run:

using System;

namespace DisplayHousePlants
{
class HousePlant
{
string plantName;
double plantPrice;
bool fed;

public string PlantName
{
get
{
return plantName;
}
set
{
plantName = value;
}
}
public double PlantPrice
{
get
{
return plantPrice;
}
set
{
plantPrice = value;
}
}
public bool Fed
{
get
{
return fed;
}
set
{
fed = value;
}
}

public override string ToString()
{
return String.Format("Name {0, -20} Price {1, 5} Fed {2, -5}", plantName, plantPrice, fed);
}
}

}

namespace DisplayHousePlants
{
class DisplayHousePlants
{
public static void Main(string[] args)
{
HousePlant flower1 = new HousePlant();
flower1.PlantName = "Jelly Bean Plant";
flower1.PlantPrice = 12.99;
flower1.Fed = true;
Console.WriteLine(flower1);

HousePlant flower2 = new HousePlant();
flower2.PlantName = "Bonsai";
flower2.PlantPrice = 39.99;
flower2.Fed = true;
Console.WriteLine(flower2);

HousePlant flower3 = new HousePlant();
flower3.PlantName = "Aloe";
flower3.PlantPrice = 9.99;
flower3.Fed = false;
Console.WriteLine(flower3);

Console.ReadKey();
}

}

}
Vulpes14y ago
You could do it like this:

using System;

namespace DisplayHousePlants
{
class HousePlant
{
string plantName;
double plantPrice;
bool fed;

public string PlantName
{
get
{
return plantName;
}
set
{
plantName = value;
}
}
public double PlantPrice
{
get
{
return plantPrice;
}
set
{
plantPrice = value;
}
}
public bool Fed
{
get
{
return fed;
}
set
{
fed = value;
}
}

public override string ToString()
{
return String.Format("Name {0, -20} Price {1, 5} Fed {2, -5}", plantName, plantPrice, fed);
}
}

}

namespace DisplayHousePlants
{
class DisplayHousePlants
{
public void FlowerMessage()
{
HousePlant flower1 = new HousePlant();
flower1.PlantName = "Jelly Bean Plant";
flower1.PlantPrice = 12.99;
flower1.Fed = true;
Console.WriteLine(flower1);

HousePlant flower2 = new HousePlant();
flower2.PlantName = "Bonsai";
flower2.PlantPrice = 39.99;
flower2.Fed = true;
Console.WriteLine(flower2);

HousePlant flower3 = new HousePlant();
flower3.PlantName = "Aloe";
flower3.PlantPrice = 9.99;
flower3.Fed = false;
Console.WriteLine(flower3);

Console.ReadKey();
}

}

class Program
{
static void Main()
{
DisplayHousePlants dhp = new DisplayHousePlants();
dhp.FlowerMessage();
}
}
}
Prime b14y ago
Thank you Vulpes. I was trying to for the main method in the Program class to display output but it wouldn't work... So I followed your way, but what if I want the main method from class Program to display the output?