无法打开包含文件：’stdio.h’ – Visual Studio社区2017 – C错误

系统细节：
Windows 10
Visual Studio Community 2017 v.15.2(26430.6)
– 使用C安装桌面开发(Screenshot: Installation list)

第1步：我用C编写了着名的Hello World程序.

#include "stdafx.h"
#include <iostream>
using namespace std;

int main()
{
    cout << "Hello World!" << endl;
    return 0;
}

第2步：我点击Build>构建解决方案

问题：’stdio.h’：没有这样的文件或目录.完全错误：

1>------ Build started: Project: HelloWorld, Configuration: Debug Win32 ------
1>stdafx.cpp
1>c:\users\dahiana mini\desktop\learncpp\helloworld\helloworld\stdafx.h(10): 
    fatal error C1083: Cannot open include file: 'stdio.h': No such file or directory
1>Done building project "HelloWorld.vcxproj" -- FAILED.
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

故障排除详细信息/我尝试过的事情：

>配置属性> VC目录
包含目录$(VC_IncludePath); $(WindowsSDK_IncludePath);
> Screenshot: Solution Explorer (files in the project)
> stdafx.cpp文件中的代码：

// stdafx.cpp : source file that includes just the standard includes  
// HelloWorld.pch will be the pre-compiled header
// stdafx.obj will contain the pre-compiled type information

#include "stdafx.h"

// TODO: reference any additional headers you need in STDAFX.H
// and not in this file

> stdafx.h文件中的代码：

// stdafx.h : include file for standard system include files,
// or project specific include files that are used frequently, but
// are changed infrequently

#pragma once

#include "targetver.h"
#include <stdio.h>
#include <tchar.h>

注意：< stdio.h>的#include;和< tchar.h>两者都有下面的红色波浪线,并说“无法打开源文件”.
TRIED：我尝试删除最后两行,但后来我遇到了更多错误.
> TRIED：由于许多人认为不需要stdafx.h,我试图只删除第一行#include“stdafx.h”.但为了实现这一点,我必须多做一点.请看下面的答案.