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C# C# Objects Object-Oriented Programming Practice Writing Classes

Liam Andersson
Liam Andersson
1,396 Points
Posted by Liam Andersson
Liam Andersson
1,396 Points

Constructor X,Y

Jeremy wrote X = x; and Y = y; why didn't he define X and Y as an integer or double? X, Y and Z are always numbers right?

And what exactly is a constructor? Im a bit confused over the constructor bit ;/

2 Answers

Steven Parker
Steven Parker
229,744 Points
Steven Parker
Steven Parker
229,744 Points

Since C# is case-sensitive, then "X" (capital) and "x" (lower case) are two different variable names. Same with "Y" and "y". And he did define "X" and "Y" both as "int" types, a few lines above where the constructor starts.

"X", "Y", and "Z" are just variable names, nothing special and not required to be any specific type.

And a constructor is a special method that runs automatically when you create an instance of a class. It will typically establish initial states such as setting up variables as is being done here.

Liam Andersson
Liam Andersson
1,396 Points
Liam Andersson
Liam Andersson
1,396 Points

He did? Then I missed it.. Well Thanks

Gancho Iliev
Gancho Iliev
10,264 Points

Your comments are so helpful! Thanks a lot, man!

Gancho Iliev
Gancho Iliev
10,264 Points
Gancho Iliev
Gancho Iliev
10,264 Points

He define both as "int" types in this line of code:

public Point(int x, int y)