0.5 is read as 0.5 but .5 is read as 5.0 - why

hi

this bugging me little, trying enter decimal number program via serial port.

if enter, 0.5 read 0.5 if enter .5 read 5.0.

i assume being dumb here , should using different input code.

code: [select]

float stepsize=0.0; // step size

serial.print ("enter step size mm [x.x]");
  while (serial.available() <= 0) {}
  stepsize = serial.parsefloat();
  serial.print(" ...");
  serial.print(stepsize, 2);
  serial.println(" mm");

any suggestions welcome providing legal , not offensive , kept sensible getting grips coding , lot of read goes on head att.

regards... colin

quote

i assume being dumb here , should using different input code.

no, , yes.there appears bug in parsefloat(), shouldn't using anyway.

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