CODEWITHSUNDEEP
c#consoleoutput
gagro
gagro

Reputation: 421

Console two line output

I have this code which output some value from array, plus - in new line under value a[i] 

Console.Write(a[i] + "\n-");

So it looks like this

a
-

Now i have more of Console.Write(a[i+1] + "\n-"); codes and it outputs like this

a
-b
-c
-d
-

I know why this is the case but how can I return one line up after every new line \n? So I can get this

abcd
----

Upvotes: 4

Views: 1925

Answers (6)

Ragnarokkr Xia
Ragnarokkr Xia

Reputation: 201

Their are two ways.
The first way is mentioned above.The general idea is to print two lines seperately and that gives you the absolutely same result as what you want in a very simple way.
The second way is to set the cusor position using SetCursorPosition(int Left ,int Top) right under the current position and Write('_') and then move the cusor back again.

Upvotes: 1

vyrp
vyrp

Reputation: 939

What you are looking for is Console.SetCursorPosition

var baseLine = Console.CursorTop;
char[] a = {'a', 'b', 'c', 'd'};
char[] b = {'A', 'B', 'C', 'D'};
string[] conditions = {"a", "a", "both", "b"}; // Which arrays to show
for (int i = 0; i < a.Length; i++)
{
    Console.SetCursorPosition(i, baseLine);
    Console.Write(conditions[i] != "b" ? a[i] : '-');
    Console.SetCursorPosition(i, baseLine + 1);
    Console.Write(conditions[i] != "a" ? b[i] : '-');
}

baseLine is needed because you don't know in which line you are going to start.

Output:

abc-
--CD

Upvotes: 0

fubo
fubo

Reputation: 45947

Another approach with Concat:

char[] a = {'a','b','c','d'};
Console.WriteLine(string.Concat(a));
Console.WriteLine(new string('-',a.Length));

https://dotnetfiddle.net/IZdlX5

Upvotes: 2

Peter
Peter

Reputation: 493

One liner with Linq:

Console.Write(String.Concat(a) + "\n" + new String('-', a.Length));

Upvotes: 0

David
David

Reputation: 218827

You don't "go one line up". You output the first line and then output the second line. So first you'd output your whole a array, then output a line of hyphens the length of that array. Maybe something like this:

Console.WriteLine(string.Join("", a));
Console.WriteLine(string.Join("", a.Select(_ => "-")));

The first line would join all elements of the a array into a single string, the second line uses kind of a trick with LINQ to "query" the a array but return a hyphen instead of anything from that array, then outputs the same way.

Upvotes: 0

Patrick Hofman
Patrick Hofman

Reputation: 156978

You have to output the values first, then the dashes:

Console.WriteLine(string.Join("", a)); // make a string of all values and write a line end
Console.WriteLine(string.Join("", a.Select(v => "-"))); // write the dashes

[Ideone]

Upvotes: 8

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