C + + composite types

struct student{    std::string name;    int age;};/ /define STUDENT1 When creating a variable std1struct student1{    std::string name;    int age;} std1;//Create a variable std0struct{std::string name when defining the body of a nameless body    ;    int age;} Std0;struct _student{    std::string name;    int age;    _student (std::string _name,int _age)    {        name = _name;        age = _age;    }};

int num[3];    Num[0] = 1;    NUM[1] = 2;    NUM[2] = 3;    for (int. i:num) {log ("This is%d", i);    } int Arr[3] = {4, 5, 6}; Log ("size of int is%lu", sizeof (int.));//4 log ("Size of arr is%lu", sizeof (arr));//12 int arr1[] = {7,8,9};//compilation        The device will help you count the number, but it is not recommended. int arr2[100] = {0};//only to display the initialization of the first element, the compiler will initialize the other elements to 0//c++11 new attribute int c11_1[3] {5, 2, 0};//can omit the equals sign in            T c11_2[3] {};//can not write whatever in parentheses, this will set all elements to 0 std::string love {"Zhouyunxuan"};    struct Std1.name = "Yunxuan";        Std1.age = 21;        Student stu2 = {"Zhouyunxuan", 21};                Student stu3 {"Yunxuan", 21};    Create dynamic array int idx = 10;    int* p = new INT[IDX];    for (int i = 0; i < ++i) {p[i] = i*100;    } for (int i = 0; i < ++i) {log ("This is%d", p[i]);    } _student SS ("Yunxuan", 21); Log ("My name is%s", Ss.name.c_str ()); 

struct function typedef struct _student{    std::string name;    int age;    _student (const char * _name): Name (_name) {        printf ("%s\n", Name.c_str ());}    } Student;

C + + composite types