It's the -textvariable. You made a reference to an element of an array and then changed to an entirely different array. Don't do that. It's not the scanf, it's that you used 

($c_speed[0], $c_speed[1], $c_speed[2], $c_speed[3]) = sscanf("%d %d %
+d %d", $rstring);

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If you had used 
@c_speed = sscanf("%d %d %d %d", $rstring);

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it would have also failed.

Try 
@c_speed[0 .. $#c_speed] = split ' ', <$rstring>;

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and report back. This should keep your -textvariable reference correct.


Or not. You didn't provide a SSCCE so it's hard to tell...

In reply to Re^7: Reading into array with sscanf by tybalt89
in thread Reading into array with sscanf by colintu

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