Add Zero-Padding to a String

Add zero-padding to a string

You can use PadLeft

var newString = Your_String.PadLeft(4, '0');

Add zero padding to string in c?

You need to use sprintf

sprintf(file_frame, "%04d", 34);

The 0 indicates what you are padding with and the 4 shows the length of the integer number.

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Also you should be using mutable array as below.

char *file_frame = "shots"; --> char file_frame[100] = "shots";

How do I pad a string with zeroes?

To pad strings:

>>> n = '4'
>>> print(n.zfill(3))
004

To pad numbers:

>>> n = 4
>>> print(f'{n:03}') # Preferred method, python >= 3.6
004
>>> print('%03d' % n)
004
>>> print(format(n, '03')) # python >= 2.6
004
>>> print('{0:03d}'.format(n))  # python >= 2.6 + python 3
004
>>> print('{foo:03d}'.format(foo=n))  # python >= 2.6 + python 3
004
>>> print('{:03d}'.format(n))  # python >= 2.7 + python3
004

String formatting documentation.

Zero-padding a string to a finite length

printf("%06d", val);

The 0 indicates what you are padding with and the 6 shows the length of the integer number.

If you wish to store the result as a string, you can do as following.

char padded_val[7] = {0};
sprintf(padded_val, "%06d", val);

Left padding a String with Zeros

If your string contains numbers only, you can make it an integer and then do padding:

String.format("%010d", Integer.parseInt(mystring));

If not I would like to know how it can be done.

How to pad a numeric string with zeros to the right in Python?

See Format Specification Mini-Language:

In [1]: '{:<08d}'.format(190)
Out[1]: '19000000'

In [2]: '{:>08d}'.format(190)
Out[2]: '00000190'

How can I pad an integer with zeros on the left?

Use java.lang.String.format(String,Object...) like this:

String.format("%05d", yournumber);

for zero-padding with a length of 5. For hexadecimal output replace the d with an x as in "%05x".

The full formatting options are documented as part of java.util.Formatter.

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