【C++学习】char，char*，char arr[]，char* arr[]，char**

#include 
#include 

using namespace std;


int main()
{
	char a = 'A';
	char* b = "QWERT";
	char c[]{"ABCDEF"};
	char* d[] = { "QW", "YU", "JK", "LI", "OP" };
	char** e = d;

	cout << "a :" << a << endl;		//输出A
	//cout << "&a: " << &a << endl;	//输出乱码
	cout << "static_cast(&a): " << static_cast(&a) << endl;//输出a的地址

	cout << endl;

	cout << "strlen(b): " << strlen(b) << endl;		//输出5
	cout << "b: " << b << endl;						//输出QWERT
	cout << "&b: " << &b << endl;					//输出b的地址
	cout << "static_cast(&b): " << static_cast(&b) << endl;	//输出b的地址
	cout << "*b: " << *b << endl;					//输出Q
	cout << "b+1: " << b + 1 << endl;				//输出WERT
	cout << "&b+1: " << &b + 1 << endl;				//输出（b的地址+4）4是一个指针的大小
	cout << "*b+1: " << *b + 1 << endl;				//输出82		（Q的ASCII值为81）
	cout << "&(b+1): ERROR" << endl;				//
	cout << "*(b+1): " << *(b + 1) << endl;			//输出W
	cout << "sizeof(b): " << sizeof(b) << endl;		//输出4		（b是指针，大小为4个字节）

	cout << endl;

	cout << "strlen(c): " << strlen(c) << endl;		//输出6
	cout << "c: " << c << endl;						//输出ABCDEF
	cout << "&c: " << &c << endl;					//输出A的地址
	cout << "static_cast(&c): " << static_cast(&c) << endl; //输出A的地址
	cout << "*c: " << *c << endl;					//输出A
	cout << "c+1: " << c + 1 << endl;				//输出BCDEF
	cout << "&c+1: " << &c + 1 << endl;				//输出(A的地址+6+1)其中1是 '\0'引起的
	cout << "*c+1: " << *c + 1 << endl;				//输出66		（A的ASCII值是65）
	cout << "&(c+1): ERROR" << endl;				//
	cout << "*(c+1): " << *(c + 1) << endl;			//输出B
	cout << "c[0]: " << c[0] << endl;				//输出A
	cout << "&c[0]: " << &c[0] << endl;				//输出ABCDEF
	cout << "static_cast(&c[0]): " << static_cast(&c[0]) << endl;//输出A的地址
	cout << "c[1]: " << c[1] << endl;				//输出B
	cout << "&c[1]: " << &c[1] << endl;				//输出BCDEF
	cout << "static_cast(&c[1]): " << static_cast(&c[1]) << endl;//输出B的地址
	cout << "sizeof(c): " << sizeof(c) << endl;		//输出7（=6+1）其中1是 '\0'引起的

	cout << endl;
	//char* d[] = { "QW", "YU", "JK", "LI", "OP"};

	cout << "strlen(d): " << strlen(*d) << endl;	//输出2
	cout << "d: " << d << endl;						//输出QW中Q的地址
	cout << "&d: " << &d << endl;					//输出QW中Q的地址
	cout << "*d: " << *d << endl;					//输出QW
	cout << "d+1: " << d + 1 << endl;				//输出YU中Y的地址
	cout << "&d+1: " << &d + 1 << endl;				//输出（QW中Q的地址 + 20）5个指针，每个指针4个字节
	cout << "*d+1: " << *d + 1 << endl;				//输出W
	cout << "&(d+1): ERROR" << endl;				//
	cout << "*(d+1): " << *(d + 1) << endl;			//输出YU
	cout << "d[0]: " << d[0] << endl;				//输出QW
	cout << "&d[0]: " << &d[0] << endl;				//输出QW中Q的地址
	cout << "static_cast(&d[0]): " << static_cast(&d[0]) << endl;//输出QW中Q的地址
	cout << "d[1]: " << d[1] << endl;				//输出YU
	cout << "&d[1]: " << &d[1] << endl;				//输出YU中Y的地址
	cout << "static_cast(&d[1]): " << static_cast(&d[1]) << endl;//输出YU中Y的地址
	cout << "static_cast(&d[4]): " << static_cast(&d[4]) << endl;//输出OP中O的地址
	cout << "sizeof(d): " << sizeof(d) << endl;		//输出20（共5个指针，每个指针4个字节）

    cout << endl;
	
	cout << strlen(*e) << endl;					//输出2
	cout << e << endl;							//输出QW中Q的地址
	cout << &e << endl;							//输出e的地址
	cout << *e << endl;							//输出QW
	cout << e+1 << endl;						//输出YU中Y的地址
	cout << &e+1 << endl;						//输出(e的地址+4)
	cout << *e+1 << endl;						//输出W
	cout << *(e + 1) << endl;					//输出YU
	cout << "&(e + 1): ERROR" << endl;			//
	cout << *(e + 1)+1 << endl;					//输出U
	cout << sizeof(e) << endl;					//输出4（e是指针，每个指针4个字节）

	cout << endl;

	system("pause");

	return 0;
}

写给笨笨的自己。

QAQ

Fighting！！