VC控制台程序输出乱码问题的解决(实测)

测试环境：Win2022+VS2022

分别测试了3中字符串的输出：ANSI,Unicode,UTF8

乱码与否的测试结果就写在代码注释里：

void t_cp()
{
	HANDLE h = GetStdHandle(STD_OUTPUT_HANDLE);
	LPCSTR sa = "SetConsoleOutputCP()：设置与调用进程关联的控制台使用的输出代码页。";
	LPCWSTR sw = L"SetConsoleOutputCP()：设置与调用进程关联的控制台使用的输出代码页。";
	LPSTR utf8 = Help::UnicodeToUtf8(sw);	//内部调用了WideCharToMultiByte()，得到utf8
	int len_sa = (int)strlen(sa);
	int len_sw = (int)wcslen(sw);
	int len_utf8 = (int)strlen(utf8);
	
	printf("1\t%s\n", sa);			//正常
	wprintf(L"2\t%s\n", sw);		//乱码
	printf("3\t%s\n", utf8);		//乱码
	printf("\n");
	
	setlocale(LC_ALL, "chs");
	
	printf("21\t%s\n", sa);			//正常
	wprintf(L"22\t%s\n", sw);		//正常
	printf("23\t%s\n", utf8);		//乱码
	printf("\n\n");

	SetConsoleOutputCP(65001);

	printf("31\t%s\n", sa);			//正常
	wprintf(L"32\t%s\n", sw);		//正常
	printf("33\t%s\n", utf8);		//乱码(似乎printf不受SetConsoleOutputCP影响)
	printf("\n\n");

	WriteConsoleA(h, sa, len_sa, 0, 0);		//乱码
	printf("\n");
	WriteConsoleW(h, sw, len_sw, 0, 0);		//正常
	printf("\n");
	WriteConsoleA(h, utf8, len_utf8, 0, 0);	//正常
	printf("\n\n"); 

	SetConsoleOutputCP(936);
	WriteConsoleA(h, sa, len_sa, 0, 0);		//正常
	printf("\n");
	WriteConsoleW(h, sw, len_sw, 0, 0);		//正常
	printf("\n");
	SetConsoleOutputCP(65001);
	WriteConsoleA(h, utf8, len_utf8, 0, 0);	//正常
	printf("\n");
}