//小括号初始化
string str("hello");

//等号初始化
string str="hello";

//大括号初始化
struct Studnet{
 char* name;
 int age;
};
Studnet s={"dablelv",18}; //纯数据（Plain of Data,POD）类型对象
Studnet sArr[]={{"dablelv",18},{"tommy",19}}; //POD数组

class Test{ 
 int a; 
 int b; 
public: 
 C(int i, int j); 
}; 
Test t{0,0};     //C++11 only，相当于 Test t(0,0); 
Test* pT=new Test{1,2};   //C++11 only，相当于 Test* pT=new Test{1,2}; 
int* a = new int[3]{ 1, 2, 0 }; //C++11 only

// C++11 container initializer 
vector<string> vs={ "first", "second", "third"}; 
map<string,string> singers ={ {"Lady Gaga", "+1 (212) 555-7890"},{"Beyonce Knowles", "+1 (212) 555-0987"}}; 

class C 
{
private: 
 int a=7; //C++11 only
};