How to pad zeros in the front of the number using 'num2str'

How to pad zeros in the front of the number using 'num2str' ?

Answer 1

[MathWorks Support Team]

For example, you have 47 and you want the output to be 047

Please use the following command:

>> num = 47;

>> num2str(num,'%03.f');

The '%03.f' format specifier indicates that there would totally 3 digits before the decimal point prepended with 0 depending on the digits in the number.