使用C语言生成GUID

Windows系统&Linux系统获取uuid统一通用代码:

#include <stdio.h>
#include <string>
#include <iostream>

#ifdef WIN32
#include <objbase.h>
#else
#include <uuid/uuid.h>
#endif

using namespace std;

#define MAX_LEN 128


/*
**@brief: get windows guid or linux uuid
**@return: string type windows guid or linux uuid
*/
string GetGuid()
{
    char szuuid[MAX_LEN] = {0};
#ifdef WIN32
    GUID guid;
    CoCreateGuid(&guid);
    _snprintf_s(
        szuuid,
        sizeof(szuuid),
        "{%08X-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X}",
        guid.Data1, guid.Data2, guid.Data3,
        guid.Data4[0], guid.Data4[1],
        guid.Data4[2], guid.Data4[3],
        guid.Data4[4], guid.Data4[5],
        guid.Data4[6], guid.Data4[7]);
#else
    uuid_t uuid;
    uuid_generate(uuid);
    uuid_unparse(uuid, szuuid);
#endif

    return std::string(szuuid);
}

int main()
{
    string strGuid  = GetGuid();
    cout << strGuid.c_str() << endl;
    return 0;
}