wstring问题

mac版：

//
//  main.m
//  test
//
//  Created by haidrgon on 2018/12/20.
//  Copyright © 2018 haidrgon. All rights reserved.
//

#import <Foundation/Foundation.h>
#include<iostream>
#include <string>
#include <stdlib.h>
#import<cwchar>
#import<wchar.h>
using namespace std;

int main(int argc, const char * argv[]) {
    @autoreleasepool {
        // insert code here...
        wchar_t* temp=L"abc123你我他";
        wstring wstr = temp;
        wprintf(L"%s\n", wstr.c_str());

       // wcout.imbue(locale("chs"));
        wcout<<wstr<<endl;
        NSData *data = [NSData dataWithBytes:wstr.data() length:sizeof(wchar_t) * wstr.size()];
        NSString *str = [[NSString alloc] initWithData:data encoding:NSUTF32LittleEndianStringEncoding];
        NSLog(@"str %@", str);
        NSLog(@"Hello, World!");
        cout<<[str UTF8String]<<endl;
    }
    return 0;
}

linux版

#include<iostream>
#include<string>
#include<locale>
using namespace std;
int main()
{
    wstring wstr=L"世界你好！";
    locale loc("zh_CN.UTF-8");
    locale::global(loc);
    wcout<<wstr<<endl;
    return 0;
}