ares_version (3) - Linux Man Pages
ares_version: Get the version number of the library
NAMEares_version - Get the version number of the library
#include <ares.h> const char *ares_version(int *version)
DESCRIPTIONThe ares_version function gets the library version as a string and optionally as an integer stored in the version, argument. If you pass a NULL, no integer is attempted to be returned.
The integer is built up as 24bit number, with 8 separate bits used for major number, minor number and patch number. This makes a version string such as 1.2.3 will be returned as the hexadecimal number 0x010203 (decimal 66051).
NOTESThis function is not compatible with ares.