GNU Octave Manual Version 3by John W. Eaton, David Bateman, Søren Hauberg Paperback (6"x9"), 568 pages ISBN 095461206X RRP £24.95 ($39.95) |

### 14.2.8 Integer Conversions

This section describes the options for the `‘%d’`, `‘%i’`,
`‘%o’`, `‘%u’`, `‘%x’`, and `‘%X’` conversion
specifications. These conversions print integers in various formats.

The `‘%d’` and `‘%i’` conversion specifications both print an
numeric argument as a signed decimal number; while `‘%o’`,
`‘%u’`, and `‘%x’` print the argument as an unsigned octal,
decimal, or hexadecimal number (respectively). The `‘%X’` conversion
specification is just like `‘%x’` except that it uses the characters
`‘ABCDEF’` as digits instead of `‘abcdef’`.

The following flags are meaningful:

`‘-’`- Left-justify the result in the field (instead of the normal right-justification).
`‘+’`-
For the signed
`‘%d’`and`‘%i’`conversions, print a plus sign if the value is positive. `‘ ’`-
For the signed
`‘%d’`and`‘%i’`conversions, if the result doesn't start with a plus or minus sign, prefix it with a space character instead. Since the`‘+’`flag ensures that the result includes a sign, this flag is ignored if you supply both of them. `‘#’`-
For the
`‘%o’`conversion, this forces the leading digit to be`‘0’`, as if by increasing the precision. For`‘%x’`or`‘%X’`, this prefixes a leading`‘0x’`or`‘0X’`(respectively) to the result. This doesn't do anything useful for the`‘%d’`,`‘%i’`, or`‘%u’`conversions. `‘0’`-
Pad the field with zeros instead of spaces. The zeros are placed after
any indication of sign or base. This flag is ignored if the
`‘-’`flag is also specified, or if a precision is specified.

If a precision is supplied, it specifies the minimum number of digits to appear; leading zeros are produced if necessary. If you don't specify a precision, the number is printed with as many digits as it needs. If you convert a value of zero with an explicit precision of zero, then no characters at all are produced.

ISBN 095461206X | GNU Octave Manual Version 3 | See the print edition |