how to convert a character into string
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I read a line from notepad. It is in char. It need to be converted to string for conversion
To read a line
fid1=fopen('M:\decompiler\dct.txt','r')
C_line = fgetl(fid1)
to read a word
instruction = string(inst(14:19))
The read word is a char. I need it in string
采纳的回答
Walter Roberson
2016-1-6
编辑：Walter Roberson
2016-1-6
1 个投票
MATLAB strings are row vectors of characters. There is no MATLAB string data type.
5 个评论
Sangeetha Marikkannan
2016-1-6
Stephen23
2016-1-6
Walter Roberson's Answer tells you that there is no fundamental MATLAB class "string", only the class "char". This means a string is a char array. You can read it for yourself:
Please show us exact input and output examples of what you want to achieve, then we can help you more easily.
Andrew Pontius
2018-2-6
编辑：Stephen23
2018-2-7
Hey folks, I'd like a little more clarification on this. I'm on MATLAB 2016a, which appears to be directly before string became an actual datatype. When I assign a character array to a variable, e.g.
comPort = 'COM4';
and call
isstring(comPort);
MATLAB returns logical false. The reason why I'm curious as to this behavior is that I am trying to default to a specific serial port if the user doesn't provide one in a function, but MATLAB seems to treat
serial('COM4');
differently to
serial(comPort);
Walter Roberson
2018-2-6
R2016a did not have isstring() . It did have isstr()
The string data type was added in R2016b, which is when isstring() appeared. isstring() tests for the string data type, not for character vectors, so isstring('COM4') would be expected to be false because 'COM4' is a character vector rather than a string object.
MATLAB may treat serial('COM4') differently than comPort='COM4'; serial(comPort); when generating code, including possibly for MATLAB Function Block of a Simulink model. There are a number of functions where code generation requires that some of the parameters be constants rather than computed. For example code generation needs constants when what the code generation phase is doing is effectively running the function ahead of time and generating static code for the resulting array, such as can happen with building filters or communications codes. On the other hand, MATLAB Coder does not support serial() at all.
Andrew Pontius
2018-2-8
Thanks for the info!
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