Page 128 - Programming Microcontrollers in C

Input and Output 113

g,G Uses e or f format, whichever requires least space.
% No argument is converted. Print as a %
Additional formatting capability exists. The complete form of
the % command is as follows:

%[flags][width][.precision][modifier]type
where the various optional fields have the following meanings.

flags

- Left-justify the value if there is a width field speci­
fied.
+ Print leading + character for positive outputs

width
Width Precision
Minimum width of The number of digits
print zone. Pad the to the right of the
field with 0 if the decimal point. For
leading width strings, the maximum
specifier is 0. number of characters.
Modifier

Modifier Meaning

h Used with any integral type, data type is short.

l Used with any integral type, data type is long.

L Used with any floating point type, the data type is
long double.

This formatting approach works with strings as well as nu­
merical outputs. If a string output contains a field width or a precision,
it works much the same as a numerical output. If the field width
specified is not long enough to hold the output string, the specified
field width is ignored. The complete string is printed out. With a
string, precision specifies the number of output characters. If the
precision is smaller than the field width, the width of the output field
will be the precision specification. A minus sign applied to field width