fprintf for logical statement

im trying to write a single code for an fprintf.

Say I have x=1.9712 nh=0.3224 converged=true (or sometimes false)

I have written so far

fprintf('x is %d nh is %d converged is %d./n',x,nh,converged)

which results in, x is 1.971166e+00 nh is 3.223800e-01 converged is 1./nK>>

If converged=true, I would like it to say something like x is 1.971.. nh is 3.223... convergence achieved converged=true

If converged is false I would like it to say something like x is 1.971.. nh is 3.223... convergence not achieved converged=false

The fprintf is being called in a loop I would like each time its called to have it written on a new line in the command window because now it produces on the same line.

Thanks for the help.

Answer 1

[Jan]

LogicalStr = {'false', 'true'};
% your loop
  fprintf('x is %d nh is %d converged is %s.\n', ...
          x, nh, LogicalStr{converged + 1});

Note the \n instead of /n

[James Connor]

Thank you so much

Answer 2

[Christophe LB]

Also a late answer but "mat2str" does the trick easily.

>> fprintf('x is %d nh is %d converged is %s.\n',x,nh,mat2str(converged))
x is 1.971200e+00 nh is 3.224000e-01 converged is true.

[Stephen23]

+1 neat and simple

Answer 3

[Thomas Schmidt]

I know its a late answer, but maybe someone else is searching for this.

So, mostly i am using 'string (x)' to convert a logical into a string (true / false).

example:

   >> a = true

   a =

     logical

      1

   >> string (a)

   ans =

       "True"

[Sindar]

extra tip if your variable might be 0/1 instead of false/true:

string(~~a)

Answer 4

[Steven Lord]

I don't believe there's a specifier that makes the logical values print out as their string representations. You will need to define a variable that contains the string representation.

 if converged
   status = 'true';
 else
   status = 'false';
 end

and print that string using %s instead of the last %d. As for the newline, change /n to \n in your call.

Answer 5

[Pedro Busc]

This is so LAME, matlab should convert it internally.

[Jan]

Sorry, what? What is lame? Do you have a runtime issue with this method? Do you want fprintf to display 'true', when a logical value is provided? But this is not the way the fprintf library works. If is based on the same base functions as the C version.

The suggest methods have the benefit, that they can show 'true', 'True', 'TRUE', 'On', 'Yes', 'Enabled' or what ever.