#include <windows.h>
#include <iostream.h>
void main()
{
　wchar_t a='A';
　cout<<sizeof(a)<<endl;
　wchar_t* p=L"Hello!";
　cout<<sizeof(p)<<endl;
　static wchar_t b[]=L"Hello!";
　cout<<sizeof(b)<<endl;
}

编译器提示
D:\ProgramFiles\Microsoft Visual Studio\myprojects2\宽字符\宽字符.cpp(5) : error C2018: unknown character '0xa1'
D:\ProgramFiles\Microsoft Visual Studio\myprojects2\宽字符\宽字符.cpp(5) : error C2018: unknown character '0xa1'
D:\ProgramFiles\Microsoft Visual Studio\myprojects2\宽字符\宽字符.cpp(6) : error C2018: unknown character '0xa1'
D:\ProgramFiles\Microsoft Visual Studio\myprojects2\宽字符\宽字符.cpp(6) : error C2018: unknown character '0xa1'
D:\ProgramFiles\Microsoft Visual Studio\myprojects2\宽字符\宽字符.cpp(7) : error C2018: unknown character '0xa1'
D:\ProgramFiles\Microsoft Visual Studio\myprojects2\宽字符\宽字符.cpp(7) : error C2018: unknown character '0xa1'
D:\ProgramFiles\Microsoft Visual Studio\myprojects2\宽字符\宽字符.cpp(8) : error C2018: unknown character '0xa1'
D:\ProgramFiles\Microsoft Visual Studio\myprojects2\宽字符\宽字符.cpp(8) : error C2018: unknown character '0xa1'
D:\ProgramFiles\Microsoft Visual Studio\myprojects2\宽字符\宽字符.cpp(9) : error C2018: unknown character '0xa1'
D:\ProgramFiles\Microsoft Visual Studio\myprojects2\宽字符\宽字符.cpp(9) : error C2018: unknown character '0xa1'
D:\ProgramFiles\Microsoft Visual Studio\myprojects2\宽字符\宽字符.cpp(10) : error C2018: unknown character '0xa1'
D:\ProgramFiles\Microsoft Visual Studio\myprojects2\宽字符\宽字符.cpp(10) : error C2018: unknown character '0xa1'
执行 cl.exe 时出错.
我不知道是怎么回事

全角字符我没有打开啊，还出错，郁闷

wchar_t a=L'A';