拼接窄的和宽的字符串

#include <iostream>

using namespace std;

#define TRUE 1
#define FALSE 0
#define N 2+3
void fun()
{
    wchar_t arrayj[] = L"Hello" L"wrold";
    char a[] = "aa" "sfd";
    cout << a << endl;
    cout << a[0] << endl;
    cout << arrayj << endl;
}
int main()
{
    fun();
    return 0;
}
#include <iostream>

using namespace std;

#def