MATLAB: Use a variable in Request user input prompt.

inputrequestwrong format specifier

I am trying to use the Request User Input command with a changeable message for every iteration. For example:
1 prompt=sprintf('For file %f give the value for x',filename)
2 x = input(prompt)
However filename is a 1×23 char and I don't get the result I get. The code I use, treats filename as a
Any solutions?

Best Answer

The identifier you are using in sprintf (%f) stands for floating point, but you want a char array so use the identifier %s.
>> filename = 'abcdef.csv';
>> prompt=sprintf('For file %s give the value for x',filename)
prompt =
For file abcdef.csv give the value for x
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