Print CLSID as GUID string

print_clsid_guid.cpp

#include <iostream>

typedef unsigned long DWORD;
typedef unsigned short WORD;
typedef unsigned char BYTE;

struct GUID {
  DWORD Data1;
  WORD  Data2;
  WORD  Data3;
  BYTE  Data4[8];
};

int main()
{
    GUID guid{ 0x177F0C4A, 0x1CD3, 0x4DE7, { 0xA3, 0x2C, 0x71, 0xDB, 0xBB, 0x9F, 0xA3, 0x6D } };
    
    printf("{%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]);
}