[Octave-bug-tracker] [bug #33226] Value of variable changes unexpectedly; print statement is repeated unexpectedly

[Rik]

Update of bug #33226 (project octave):

                  Status:                    None => Invalid                
             Open/Closed:                    Open => Closed                 

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Follow-up Comment #1:

This is not an Octave issue.  Your program calls


[status, num_row] = system(['cat ' temp_df '| wc -l'])


which returns num_row as a *string*, not a number.  There are probably much
simpler ways of getting your data into Octave.  But, if you continue with the
current approach you need to use 'num_row = str2num(num_row)' after the
system() call.

To see what is happening, try the following code which uses printf to print a
string using a decimal format code.  You can see that the output values are
the decimal ASCII values for 1 (49) and 0 (48) and together make the number of
rows you were expecting.


printf("%dn", "10000")
49
48
48
48
48




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