linux/icu4c-64_2-docs/icudataver_8h_source.html

 // © 2016 and later: Unicode, Inc. and others.
 // License & terms of use: http://www.unicode.org/copyright.html
 /*
 ******************************************************************************
 *
 *   Copyright (C) 2009-2013, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *
 ******************************************************************************
 */


 #ifndef __ICU_DATA_VER_H__
 #define __ICU_DATA_VER_H__

 #include "unicode/utypes.h"

 #define U_ICU_VERSION_BUNDLE "icuver"

 #define U_ICU_DATA_KEY "DataVersion"

 U_STABLE void U_EXPORT2 u_getDataVersion(UVersionInfo dataVersionFillin, UErrorCode *status);

 #endif
UVersionInfo
uint8_t UVersionInfo[U_MAX_VERSION_LENGTH]
The binary form of a version on ICU APIs is an array of 4 uint8_t.
Definition: uversion.h:59

UErrorCode
UErrorCode
Error code to replace exception handling, so that the code is compatible with all C++ compilers...
Definition: utypes.h:401

utypes.h
Basic definitions for ICU, for both C and C++ APIs.

u_getDataVersion
void u_getDataVersion(UVersionInfo dataVersionFillin, UErrorCode *status)
Retrieves the data version from icuver and stores it in dataVersionFillin.

U_STABLE
#define U_STABLE
This is used to declare a function as a stable public ICU C API.
Definition: umachine.h:111