Question with coding

by Soli · 3 posts
6 years ago in .Net (C#, VB, etc)

Posted 6 years ago · Author

Hello

I'm tinkering with some C# tutorials and trying to figure out this code. I modified the tutorial code because I just wanted to play around with it and see what happened if I changed things around. I'm having lots of fun and loving how things change; however, I'm confused as to why I need to add the work "string" in one section and not the other when the string looks identical.

Code

 string aFriend = "Bill";
Console.WriteLine("Hello " + aFriend);
aFriend = "Maira";
Console.WriteLine($"Hello {aFriend}");
string firstFriend = "Maria";
string secondFriend = "Sage";
string enemy = "Bill";
Console.WriteLine($"My friends are {firstFriend} and {secondFriend} but not {enemy}");

Why do I need

Code

string aFriend = "Bill";

Code

aFriend = "Maira";

I took "string" out of the code and I got an error. I only took it out of the first line.
Thank u guys and I hope someone out there can clarify for me. I can't just accept that it has to be this way just because. I need to know the reason or I'll obsess over it. :awesome4:

Edit: I'm aware that

Code

Console.WriteLine("Hello " + aFriend);

and

Code

Console.WriteLine($"Hello {aFriend}");

give me the same results. I just wanted to keep the two different codes in here for reference so I remember to look at "string concatenation" in my notes.

Posted 6 years ago

~Moved to Programming & Scripting > .Net~

The first line:

Code

string aFriend = "Bill";

Is declaring a string called "aFriend" and giving it a value. Since you've already declared it, you no longer need the type identifier. The next line:

Code

aFriend = "Maira";

Is simply changing the value of the string "aFriend" that you declared previously.

TL;DR:

The first line tells the program to create a new string string called "aFriend" the second line is just changing the value of "aFriend".

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