Here is a table summarizing what all the different conversions do:

`%d', `%i'

Print an integer as a signed decimal number. See Integer Conversions, for details. `%d' and `%i' are synonymous for
output, but are different when used with scanf for input
(see Table of Input Conversions).

`%o'

Print an integer as an unsigned octal number. See Integer Conversions, for details.

`%u'

Print an integer as an unsigned decimal number. See Integer Conversions, for details.

`%x', `%X'

Print an integer as an unsigned hexadecimal number. `%x' uses
lower-case letters and `%X' uses upper-case. See Integer Conversions, for details.

`%f'

Print a floating-point number in normal (fixed-point) notation.
See Floating-Point Conversions, for details.

`%e', `%E'

Print a floating-point number in exponential notation. `%e' uses
lower-case letters and `%E' uses upper-case. See Floating-Point Conversions, for details.

`%g', `%G'

Print a floating-point number in either normal or exponential notation,
whichever is more appropriate for its magnitude. `%g' uses
lower-case letters and `%G' uses upper-case. See Floating-Point Conversions, for details.

`%a', `%A'

Print a floating-point number in a hexadecimal fractional notation which
the exponent to base 2 represented in decimal digits. `%a' uses
lower-case letters and `%A' uses upper-case. See Floating-Point Conversions, for details.

If the syntax of a conversion specification is invalid, unpredictable
things will happen, so don't do this. If there aren't enough function
arguments provided to supply values for all the conversion
specifications in the template string, or if the arguments are not of
the correct types, the results are unpredictable. If you supply more
arguments than conversion specifications, the extra argument values are
simply ignored; this is sometimes useful.

Published under the terms of the GNU General Public License