Extracting decimal number from string

Share icon

I am trying to extract decimal number from string. The string always looks like "+/- 0.01093" and the i need at least 4 digits after the decimal dot.
I am trying with sscanf command : 

<br />
                        printf "Location error for peak: %g is : %s \r",  peaknumber, ErrorString<br />
            variable  FPError<br />
            sscanf ErrorString , "%e" , FPError<br />
            printf "Location error  in number :  %g \r", FPError<br />
            <br />
                       // ErrorString = string value in error example +/- 0.018739<br />
                       // FPError = numeric value for error<br />
<br />



I have tried with %d , %u tags but it didn't work. Always the numeric variable has zero value (indicating it is taking only the value before the decimal).
Should I try SplitString command.
Solved :

Using sscanf with a format expression does the job.
string formatString = "%s %f" 
sscanf Errorstring, formatString , v1, FPError


:-)

March 14, 2015 at 02:52 am - Permalink