Add user to group

gistfile1.txt

#include <windows.h>
#include <lm.h>
#include <stdio.h>

#pragma comment(lib, "Netapi32.lib")

void CreateUser(LPCWSTR userName, LPCWSTR password) {
    USER_INFO_1 userInfo;
    NET_API_STATUS status;

    ZeroMemory(&userInfo, sizeof(userInfo));

    userInfo.usri1_name = (LPWSTR)userName;
    userInfo.usri1_password = (LPWSTR)password;
    userInfo.usri1_priv = USER_PRIV_USER;  // Normal user
    userInfo.usri1_home_dir = NULL;
    userInfo.usri1_comment = L"Created by C program";
    userInfo.usri1_flags = UF_SCRIPT | UF_DONT_EXPIRE_PASSWD; // User must not change password

    status = NetUserAdd(NULL, 1, (LPBYTE)&userInfo, NULL);

    if (status == NERR_Success) {
        wprintf(L"User '%s' created successfully.\n", userName);
    } else if (status == NERR_UserExists) {
        wprintf(L"User '%s' already exists.\n", userName);
    } else {
        wprintf(L"Failed to create user. Error: %d\n", status);
    }
}

void AddUserToLocalGroup(LPCWSTR userName, LPCWSTR groupName) {
    LOCALGROUP_MEMBERS_INFO_3 memberInfo;
    NET_API_STATUS status;

    memberInfo.lgrmi3_domainandname = (LPWSTR)userName;

    status = NetLocalGroupAddMembers(NULL, groupName, 3, (LPBYTE)&memberInfo, 1);

    if (status == NERR_Success) {
        wprintf(L"User '%s' added to group '%s' successfully.\n", userName, groupName);
    } else if (status == NERR_GroupNotFound) {
        wprintf(L"Group '%s' does not exist.\n", groupName);
    } else {
        wprintf(L"Failed to add user to group. Error: %d\n", status

Main.c

#include <windows.h>
#include <lm.h>
#include <stdio.h>

#pragma comment(lib, "Netapi32.lib")

void AddUserToLocalGroup(LPCWSTR userName, LPCWSTR groupName) {
    LOCALGROUP_MEMBERS_INFO_3 memberInfo;
    NET_API_STATUS status;

    memberInfo.lgrmi3_domainandname = (LPWSTR)userName;

    status = NetLocalGroupAddMembers(NULL, groupName, 3, (LPBYTE)&memberInfo, 1);
    
    if (status == NERR_Success) {
        wprintf(L"User '%s' added to group '%s' successfully.\n", userName, groupName);
    } else {
        wprintf(L"Failed to add user to group. Error: %d\n", status);
    }
}

int wmain(int argc, wchar_t *argv[]) {
    if (argc != 3) {
        wprintf(L"Usage: %s <username> <groupname>\n", argv[0]);
        return 1;
    }

    AddUserToLocalGroup(argv[1], argv[2]);

    return 0;
}