C ++类的向量初始化

Question

我有一个班级

class MAC {
  private :
    int mac_address;
  public:
    int mac_access;
    MAC() {mac_address = 10;}
    MAC(int m_add,int m_axs):mac_address(m_add),mac_access(mac_access) {};

};

我想创建这个类的向量，并像这样进行初始化

int main()
{
  C m_c;
  std::cout<<m_c.m_a.a << std::endl;
  MAC a(9,3),b(4,5);
  std::vector<MAC> m_arr;
  m_arr(4,5);
}

当我编译时，我收到此错误

constructor.cpp: In function ‘int main()’:
constructor.cpp:63:12: error: no match for call to ‘(std::vector<MAC>) (int, int)’

基本上我很困惑如何才能给出int或char的向量给出的大部分功能？

为了清除这种混乱，我希望我的班级表现得和我们这样做的时候一样

std::vector<int> a (4,100);

但目前我无法做到

std::vector<MAC> m_mac(4,100);

Answer 1

class MAC {
private :
    int mac_address;
public:
    int mac_access;
    MAC(int arg_mac_address = 10):mac_address(arg_mac_address){}
    MAC(int m_add,int m_axs):mac_address(m_add),mac_access(mac_access) {};

};

int main()
{
    /*C m_c;
    std::cout<<m_c.m_a.a << std::endl;*/
    MAC a(9,3),b(4,5);
    std::vector<MAC> m_arr(4, 5);
}