#include <stdio.h>
#include <Windows.h>

int main() {
    WCHAR computerName[MAX_COMPUTERNAME_LENGTH + 1];
    DWORD computerNameLen = MAX_COMPUTERNAME_LENGTH + 1;

    if (!GetComputerNameEx(ComputerNameDnsHostname, computerName, &computerNameLen)) {
        printf("Failed to get computer name, error code %d", GetLastError());
        return 1;
    }

    char computerNameA[MAX_COMPUTERNAME_LENGTH + 1];
    int length = WideCharToMultiByte(CP_UTF8, 0, computerName, -1, computerNameA, sizeof(computerNameA), NULL, NULL);
    if (length == 0) {
        printf("Failed to convert computer name to char, error code %d", GetLastError());
        return 1;
    }

    printf("Computer name: %s\n", computerNameA);
    return 0;
}