getting data type from a prompt in fread()

I want to import an array using the fread(), I wonder if I can use a prompt to get the type of file. I tried the following code, it works if I type the data type inside the fread() but its not working when I enter them from the prompt. I appereciate your help.

FID = fopen(filename, 'r');

if FID < 0; error('Cannot open file'); 

end

% Skip the header here...

prompt = {'Enter the type of input data (float,uint32,int16,double):','Enter the type of output data (float,uint32,int16,double):'};

dlg_title = 'the type of input/output';

num_lines = 1;

def = {'double','double'};

answer = inputdlg(prompt,dlg_title,num_lines,def);

data_type=strcat(answer(1),'=>',answer(2));

Data = fread(FID, Inf, data_type);  % Choose the correct format!

fclose(FID);

Answer 1

[Oleg Komarov]

data_type=strcat(answer(1),'=>',answer(2));

Should be

data_type = [answer{1},'=>',answer{2}];  % Curly brackets to access cell content!

[Matt Fig]

Now it is you who is fast!

[Hassan]

thanks a lot Oleg.