代码：

#include <iostream>  
#include <algorithm>  
#include <cmath>  
#include <vector>  
#include <string>  
#include <cstring>
#include <atlbase.h>
#include <Windows.h>
#pragma warning(disable:4996)  
using namespace std;

void read_dword()//读取操作表,其类型为DWORD
{
    HKEY hKEY;//定义有关的键，在查询结束时关闭
    //打开与路径data_Set相关的hKEY

    LPCTSTR data_set = _T("Software\\Chicony\\Lenovo1"); 
    
    //访问注册表，hKEY则保存此函数所打开的键的句柄
    if (ERROR_SUCCESS == ::RegOpenKeyEx(HKEY_CURRENT_USER, data_set, 0, KEY_READ, &hKEY))
    {
        DWORD dwValue;//长整型数据，如果是字符串数据用char数组
        DWORD dwSize = sizeof(DWORD);
        DWORD dwType = REG_DWORD;

        if (::RegQueryValueEx(hKEY, _T("123"), 0, &dwType, (LPBYTE)&dwValue, &dwSize) != ERROR_SUCCESS)
        {
            cout << "错误：无法查询有关的注册表信息" << endl;
        }

        cout << dwValue << endl;
    }
    ::RegCloseKey(hKEY);
}

void read_reg_sz()//读取操作表,其类型为REG_SZ
{
    HKEY hkey;
    LPCTSTR data_set = _T("Software\\Chicony\\Lenovo1");

    if (ERROR_SUCCESS == ::RegOpenKeyEx(HKEY_CURRENT_USER, data_set, 0, KEY_READ, &hkey))
    {
        char dwValue[256];
        DWORD dwSzType = REG_SZ;
        DWORD dwSize = sizeof(dwValue);
        if (::RegQueryValueEx(hkey, _T("wangchong"), 0, &dwSzType, (LPBYTE)&dwValue, &dwSize) != ERROR_SUCCESS)
        {
            cout << "无法查询有关的注册表信息" << endl;
        }
        cout << dwValue<< endl;
    }
    ::RegCloseKey(hkey);
}

void write_dword()//在\Software\\Chicony\\Lenovo1文件夹下写入一个test111的子键，设置其名称为Name，其值为6
{
    HKEY hkey;//定义有关的hkey，在查询结束时要关闭
    HKEY hTempKey;
    
    DWORD dwValue = 6;
    DWORD dwSize = sizeof(DWORD);
    DWORD dwType = REG_DWORD;

    LPCTSTR data_set= _T("Software\\Chicony\\Lenovo1");
    if (ERROR_SUCCESS == RegOpenKeyEx(HKEY_CURRENT_USER, data_set, 0, KEY_SET_VALUE, &hkey))
    {
        if (ERROR_SUCCESS == ::RegCreateKey(hkey, _T("test111"), &hTempKey))
        {
            if (ERROR_SUCCESS != ::RegSetValueEx(hTempKey, _T("Name"), 0, REG_DWORD, (CONST BYTE*)&dwValue, sizeof(DWORD)))
            {
                cout <<"写入注册表失败"<< endl;
            }
        }
    }
    ::RegCloseKey(hkey);
}

void write_reg_sz()
{
    HKEY hkey;
    HKEY hTempKey;   
    char m_name_set[256]="China";

    DWORD len = strlen(m_name_set) + 1;
    LPCTSTR data_set = _T("Software\\Chicony\\Lenovo1");
    if (ERROR_SUCCESS == ::RegOpenKeyEx(HKEY_CURRENT_USER, data_set, 0, KEY_SET_VALUE, &hkey))
    {
        if (ERROR_SUCCESS == ::RegCreateKey(hkey,_T("test1112"),&hTempKey))
        {
            if (ERROR_SUCCESS!=::RegSetValueEx(hTempKey,_T("Name"),0,REG_SZ,(const BYTE*)m_name_set,len))
            {
                cout << "写入错误" << endl;
            }
        }
    }
    ::RegCloseKey(hkey);
}

void write_binary()
{
    HKEY hkey;
    HKEY hTempKey;
    BYTE m_name[10];
    memset(m_name, 0, sizeof(m_name));
    m_name[0] = 0xff;
    m_name[1] = 0xac;
    m_name[2] = 0x05;
    m_name[3] = 0x4e;

    LPCTSTR data_set= _T("Software\\Chicony\\Lenovo1");
    if (ERROR_SUCCESS == ::RegOpenKeyEx(HKEY_CURRENT_USER, data_set, 0, KEY_SET_VALUE, &hkey))
    {
        if (ERROR_SUCCESS==::RegCreateKey(hkey,_T("test111"),&hTempKey))
        {
            if (ERROR_SUCCESS != ::RegSetValueEx(hTempKey, _T("Name"), 0, REG_BINARY, (unsigned char *)m_name, 5))
            {
                cout << "写入错误" << endl;
            }
        }
    }
    ::RegCloseKey(hkey);
}

void delete_value()
{
    HKEY hkey;
    LPCTSTR data_set = _T("Software\\Chicony\\Lenovo1\\test1112");

    if (ERROR_SUCCESS == ::RegOpenKeyEx(HKEY_CURRENT_USER, data_set, 0, KEY_SET_VALUE, &hkey))
    {
        if (ERROR_SUCCESS != ::RegDeleteValue(hkey, _T("Name")))
        {
            cout << "删除错误" << endl;
        }
    }
    ::RegCloseKey(hkey);
}

void delete_key()
{
    HKEY hkey;
    LPCTSTR data_set = _T("Software\\Chicony\\Lenovo1");

    if (ERROR_SUCCESS == ::RegOpenKeyEx(HKEY_CURRENT_USER, data_set, 0, KEY_SET_VALUE, &hkey))
    {
        if (ERROR_SUCCESS != ::RegDeleteKey(hkey,"test1112"))
        {
            cout << "删除错误" << endl;
        }
    }
    ::RegCloseKey(hkey);
}

int main()
{    
    read_dword();
    read_reg_sz();
    write_reg_sz();
    write_binary();
    delete_value();
    delete_key();
    system("pause");  
    return 0;
}