c++ - 如何在 C++ 中打印 tchar

Question

我正在尝试用 C++ 打印 UCHAR btMACAddress[INTEL_MAC_ADDR_LENGTH]。

cout<<"adapter MAC address="<<padapter->btMACAddress<<endl;

上面显示 NULL

在 c 中我可以打印。

printf("adapter macaddress  %02x:%02x:%02x:%02x:%02x:%02x \n",
       pAdapter->adapter[0].btMACAddress[0],
       pAdapter->adapter[0].btMACAddress[1],
       pAdapter->adapter[0].btMACAddress[2],
       pAdapter->adapter[0].btMACAddress[3],
       pAdapter->adapter[0].btMACAddress[4],
       pAdapter->adapter[0].btMACAddress[5]);

Answer 1

正如 Joachim 所指出的，您可以使用 stream manipulators控制打印值的格式。

所需的头文件:

#include <ios>
#include <iomanip>
#include <iostream>

using namespace std;

打印MAC地址的代码:

cout << "adapter macaddress ";
for (int i=0; i<INTEL_MAC_ADDR_LENGTH; i++)
{
    if (i > 0) cout << ':';
    cout << hex << setw(2) << setfill('0') 
         << (unsigned int) pAdapter->adapter[0].btMACAddress[i];
}
cout << endl;