指针(*)和引用(&),解引用(*)和取地址(&), 主要观察是在左面, 还是在右面, 如果在左面是前者, 在右面是后者;
如果比较多, 则要认真观察, 譬如int*&, 就是指针的引用, 可以避免指针内部元素的复制;
还有其他的一些形式, 见下面的例子;
代码:
/*
* test.cpp
*
* Created on: 2013.11.12
* Author: Caroline
*/
/*eclipse cdt; gcc 4.7.1*/
#include <iostream>
int main (void) {
int i(10);
int* j = &i;
int i1(20);
int*& k = j; //指针的引用, *k是*j的引用
*k = i1; //修改*k所指的内容, 则修改*j的内容;
typedef int* pint;
pint& k2 = j;
int* k3 = &*j, k4 = 10;
std::cout << "*k = " << *k <<std::endl;
std::cout << "*j = " << *j <<std::endl;
std::cout << "*k2 = " << *k2 << std::endl;
std::cout << "*k3 = " << *k3 << std::endl;
std::cout << "k4 = " << k4 << std::endl;
return 0;
}
作者：csdn博客 Spike_King
