I have converted the string 04567 to double by using str2double function.But I got the output as 4567.But I need the output as 04567 .How can it be done?

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Anushka
Anushka 2015-7-11
编辑： Stephen23 2015-7-11
I have converted the string 04567 to double by using str2double function.But I got the output as 4567.But I need the output as 04567 .How can it be done?

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回答（1 个）

bio lim
bio lim 2015-7-11
As a string, obviously you can have a leading zero. However, as you convert it to double or number, the leading numeral 0 is lost, because the numbers you converted, 4567 cannot start with 0.
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Anushka
Anushka 2015-7-11
编辑：Walter Roberson 2015-7-11
After converting from string to double I need the binary representation of the decimal format. But if the leading zero is omited then we would not get the correct binary representation.
Stephen23
Stephen23 2015-7-11
编辑：Stephen23 2015-7-11
What exactly do you want "the binary representation" of:
  1. the string of characters '04567'
  2. the double 4567
  3. the vector of digits [0,4,5,6,7]
  4. something else?
In a sense all numbers have implicit leading and trailing zeros, even if these are not displayed in normal representations. But you really need to tell us what data "the correct binary representation" should be representing.

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