std::cout输出十六进制数据

std::vector data{0x11, 0x22, 0x33, 0x99, 0xff};

std::ofstream ofs("test.txt", std::ios::app);

for (int i = 0; i < data.size(); i++)

{

std::cout << std::hex << (int)data[i] << " ";

}

std::cout << std::endl;

for (int i = 0; i < data.size(); i++)

{

std::cout << std::hex << (int)data[i] << " ";

}

std::cout << std::endl;

输出结果