Format 'sprintf' style format string with given parameters. Format may contain fields:

% [-]? [+]? [0]? [width] ( [.] [precision] ) [csdifg]
-	Adjust left, instead of right.
+	Numbers with sign
0	Pad numbers with zeros, instead of spaces
width	Width of field, if '*' width will be taken from arguments
precision	Width of fraction part (doubles), if '*' width will be taken from arguments
c	Character (integer or first character from string).
s	String
d,i	Integer
f	Float, follows width.precision stricly
g	Float with signicant fraction shown, if precision is zero (or not given) shows significant digits from it.

Use %% to escape %.