fortheday

int *i1 = new int;  // 초기화안됨
int *i2 = new int();// 됨
int i3 = int();     // 됨
int i4(0);          // 됨
int i5{0};          // 됨
int i6();           // 컴파일에러
cout << *i1 << ' ' << *i2 << ' '<< i3 << ' ' << i4 << ' ' << i5 << endl;

char *pArr1 = new char[10];   // 초기화안함
char *pArr2 = new char[10](); // '\0' 으로 초기화

fortheday

class CCar
{
	class CWheel *pWheels[4]; // inline forward declaration
};

fortheday

class CBase
{
public:
	virtual void Print() = 0; // pure virtual, abstract
};

class CDerived0 : public CBase
{
public:
	CDerived0() { puts("new0"); }

fortheday

const int i = 3;
const_cast<int&>(i) = 4;

fortheday

int add(int a, int b) { return a + b;  }

void FuncRefTest()
{
	int(*pfnAdd)(int a, int b) = add;
	pfnAdd(1, 2);
	(*pfnAdd)(1, 2);
	pfnAdd = add; // ok

	int(&rfnAdd)(int a, int b) = add;

fortheday

#pragma pack(push)
#pragma pack(1)
struct SRefTest
{
	char a;
	char b;
	char &r;

	SRefTest() : a(1), b(2), r(a) {}
};

fortheday

class CBase {
	virtual void f() {} 
};
class CDerieve : public CBase {
	virtual void f() override {}
};

void CastTest()
{
	// dynamic cast with reference

fortheday

int a = 1, b = 2;

[&]		// capture local variables as &a, &b
{
	a = 3;	// &a = 3
	b = 4; 
}();		// instant execution

[=]		// capture local variables const a, const b
{

fortheday

class CCaseA {
public:
	CCaseA() = delete;
};

class CCaseB {
public:
	CCaseB() = default;
	CCaseB & operator =(const CCaseB &) = delete;
};

fortheday

class CTest {
public:
	~CTest() = default;
};
CTest *pTest = nullptr;

{
	CTest &&rrInt = CTest();
	pTest = &rrInt;
} // ~CTestwekj()