Starting a new line

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1582251394
1582251394 2016-3-24
评论： Walter Roberson 2025-3-12，17:41
Hi I'm really new to MATLAB. My questions is how to a start a new line without executing the code. For example if I have:
y = 1123414124124124124 (want new line here without executing)

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Meghana Dinesh
Meghana Dinesh 2016-3-24
编辑：Meghana Dinesh 2016-3-24
Are you typing your code in the Command Window? Then use "..." and < enter >
But I suggest you start typing your code in a script. (Home > New > Script)
  2 个评论
1582251394
1582251394 2016-3-24
I have an incredibly long piece of code that only calculates one thing (in the worst way possible). I'm just trying to format it nicer. Thank you I will try out script and see if it helps.
Walter Roberson
Walter Roberson 2025-2-4
Note that in modern versions of MATLAB, the "..." operator has an implied seperator before it.
In sufficiently old versions of MATLAB,
[123....
456]
would have been treated as 123.456. In modern versions of MATLAB, it is treated the same as
[123. ...
456]
and so would result in [123. 456]
Side note: the parsing of literal constants takes priority over the ... operator. Entering
[123...
456]
is treated as "123." followed by ".." which is a syntax error.
But
A = 123;
[A...
456]
would be treated as [A 456] which would be [123 456]

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更多回答（2 个）

Francis
Francis 2025-3-12，15:48
Shift Enter rather than just Enter
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Walter Roberson
Walter Roberson 2025-3-12，17:41
Shift-Enter is especially valueable when entering commands at the command line, as it does indeed start a new line without executing everything that has been entered so-far.
Commands entered in this way can be recalled as a group in the command history, by pressing up-arrow to recall the last of the commands, and then pressing shift-uparrow to bring in each previous line.
However, shift-enter is treated just the same as enter within the editor.
shift-enter does not have the effect of "line continuation" . For example if you enter
a = 123 + 456<shift-enter>
- 789;
then that will be treated as two seperate commands, a = 123 + 456 and -789;

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Andrew
Andrew 2025-2-4
add ";" at the end, then click enter
  1 个评论
Steven Lord
Steven Lord 2025-2-4
Ran in:
That will end the current command (or end the current row, if it appears inside square brackets or curly braces to create a matrix or cell array.)
x = 12345; % This is one statement
y = [1 2; % This ends the first row of matrix y
3 4]
y = 2×2
1 2 3 4
<mw-icon class=""></mw-icon>
<mw-icon class=""></mw-icon>
z = {'apple'; % This ends the first row of cell array z
'banana'}
z = 2x1 cell array
{'apple' } {'banana'}
If you want to continue the command on the next line, using ... is probably the right thing to do.
q = 12345 + ... % Continue the statement on the next line
67890 % These two lines are the equivalent of "q = 12345 + 67890"
q = 80235
See this documentation page for more information on using ... and/or ; in MATLAB.

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