[C/C++] 指针

指针的两种声明、初始化方式

1、直接声明

格式：typeName * pointerName = 内存地址;

//1.直接声明int a = 10; // 声明变量aint* pa = &a; // 声明int型指针pa，将a的地址指向pacout << "变量a的地址是&a=" << &a << endl;cout << "指针pa指向地址是pa=" << pa << endl;cout << "指针pa的值是*pa=" << *pa << endl;

2、new关键字声明指针

格式：typeName * pointerName = new typeName;

//2. new关键字声明指针int* pa1 = new int;char* pc = new char;*pa1 = 100;*pc = 'M';cout << "指针pa1的值是*pa1=" << *pa1 << endl;cout << "指针pc的值是*pc=" << *pc << endl;