C++学习笔记——指针和数组的运算

          今天贴个程序,这个程序反映了指针运算的实质,同时也反映了数组在C++编译的时候将数组名解释为地址

#include <iostream>
int main()
{
    using namespace std;
    double wages[3] = {10000.0, 20000.0, 30000.0};
    short stacks[3] = {3, 2, 1};

// Here are two ways to get the address of an array
    double * pw = wages;     // name of an array = address
    short * ps = &stacks[0]; // or use address operator
// with array element
    cout << "pw = " << pw << ", *pw = " << *pw << endl;
    pw = pw + 1;
    cout << "add 1 to the pw pointer:\n";
    cout << "pw = " << pw << ", *pw = " << *pw << "\n\n";

    cout << "ps = " << ps << ", *ps = " << *ps << endl;
    ps = ps + 1;
    cout << "add 1 to the ps pointer:\n";
    cout << "ps = " << ps << ", *ps = " << *ps << "\n\n";

    cout << "access two elements with array notation\n";
    cout << "stacks[0] = " << stacks[0] 
         << ", stacks[1] = " << stacks[1] << endl;
    cout << "access two elements with pointer notation\n";
    cout << "*stacks = " << *stacks
         << ", *(stacks + 1) =  " << *(stacks + 1) << endl;

    cout << sizeof(wages) << " = size of wages array\n";
    cout << sizeof(pw) << " = size of pw pointer\n";
    return 0; 
}

      请大家想想结果。呵呵!

      希望大家能答对哦,貌似今年有个公司的笔试题目。很基础!

评论
添加红包

请填写红包祝福语或标题

红包个数最小为10个

红包金额最低5元

当前余额3.43前往充值 >
需支付:10.00
成就一亿技术人!
领取后你会自动成为博主和红包主的粉丝 规则
hope_wisdom
发出的红包
实付
使用余额支付
点击重新获取
扫码支付
钱包余额 0

抵扣说明:

1.余额是钱包充值的虚拟货币,按照1:1的比例进行支付金额的抵扣。
2.余额无法直接购买下载,可以购买VIP、付费专栏及课程。

余额充值