|Prints a literal '|
|Print decimal |
|Print nothing, but writes tbe number of characters successfully written so far into an integer pointer parameter.|
Note: This can be utilized in Uncontrolled format string exploits.
- printf("Some format string%n\n", &resultOfNSpecifier);
- printf("Count of chars before the %%n: %d\n", resultOfNSpecifier);
Count of chars before the %n: 18
v default format any type
The "%v" specifier is provided for all built-in types, and should be provided for user-defined type formatters as well. It picks a "best" representation for the given type. For the built-in types the "%v" specifier is converted as follows:
c Char u other unsigned Integral d other signed Integral g RealFloat s String
Mismatch between the argument types and the format string, as well as any other syntactic or semantic errors in the format string, will cause an exception to be thrown at runtime.
Any precision is followed optionally for Integral types by a width modifier; the only use of this modifier being to set the implicit size of the operand for conversion of a negative operand to unsigned:
hh Int8 h Int16 l Int32 ll Int64 L Int64