做服装网站的意义是什么,顺企网官网电话,云计算运维工程师,seo网络优化公司排名大家好,这里是国中之林! ❥前些天发现了一个巨牛的人工智能学习网站#xff0c;通俗易懂#xff0c;风趣幽默#xff0c;忍不住分享一下给大家。点击跳转到网站。有兴趣的可以点点进去看看← 问题: 解答: main.cpp
#include iostream
#include sales.h… 大家好,这里是国中之林! ❥前些天发现了一个巨牛的人工智能学习网站通俗易懂风趣幽默忍不住分享一下给大家。点击跳转到网站。有兴趣的可以点点进去看看← 问题: 解答: main.cpp
#include iostream
#include sales.h
using namespace std;int main()
{double vals1[12] { 1220,1100,1122,2212,1232,2334,2884,2393,3302,2922,3002,3544 };double vals2[12] { 12,11,22,21,32,34,28,29,33,29,32,35 };Sales sales1(2011, vals1, 12);LabeledSales sales2(Blogstar, 2012, vals2, 12);cout First try block:\n;try{int i;cout Year sales1.Year() endl;for (i 0; i 12; i){cout sales1[i] ;if (i % 6 5)cout endl;}cout Year sales2.Year() endl;cout Label sales2.Label() endl;for (i 0; i 12; i){cout sales2[i] ;if (i % 6 5)cout endl;}cout End of try block 1 endl;}catch (Sales::bad_indexbad){if (typeid(LabeledSales::nbad_index) typeid(bad)){LabeledSales::nbad_index* p dynamic_castLabeledSales::nbad_index*(bad);cout p-what();cout Company: p-label_val() endl;cout bad index: p-bi_val() endl;}else if (typeid(Sales::bad_index) typeid(bad)){cout bad.what();cout bad index: bad.bi_val() endl;}}cout \nNext try block: endl;try{sales2[2] 37.5;sales1[20] 23345;cout End of try block 2. endl;}catch (Sales::bad_indexbad){if (typeid(LabeledSales::nbad_index) typeid(bad)){LabeledSales::nbad_index* p dynamic_castLabeledSales::nbad_index*(bad);cout p-what();cout Company: p-label_val() endl;cout bad index: p-bi_val() endl;}else if (typeid(Sales::bad_index) typeid(bad)){cout bad.what();cout bad index: bad.bi_val() endl;}}cout done\n;return 0;
}
sales.h
#pragma once
#include iostream
#include stdexcept
#include string
using namespace std;class Sales
{
public:enum{MONTHS12};class bad_index :public logic_error{private:int bi;public:explicit bad_index( int ix,const string s Index error int Sales object\n );int bi_val()const { return bi; }virtual ~bad_index()throw(){}};explicit Sales(int yy 0);Sales(int yy, const double* gr, int n);virtual ~Sales(){}int Year()const { return year; }virtual double operator[](int i)const;virtual double operator[](int i);
private:double gross[MONTHS];int year;
};class LabeledSales :public Sales
{
public:class nbad_index :public Sales::bad_index{private:string lbl;public:nbad_index(const string lb, int ix, const string s Index error in LabeledSales objecrt\n);const string label_val()const { return lbl; }virtual ~nbad_index()throw() {}};explicit LabeledSales(const string lb none, int yy 0);LabeledSales(const string lb, int yy, const double* gr, int n);virtual ~LabeledSales() {}const string Label()const { return label; }virtual double operator[](int i)const;virtual double operator[](int i);private:string label;};
sales.cpp
#include sales.hSales::bad_index::bad_index(int ix, const string s) :logic_error(s), bi(ix)
{}Sales::Sales(int yy)
{year yy;for (int i 0; i MONTHS; i)gross[i] 0;
}Sales::Sales(int yy, const double* gr, int n)
{year yy;int lim (n MONTHS) ? n : MONTHS;int i;for (i 0; i lim; i)gross[i] gr[i];for (; i MONTHS; i)gross[i] 0;
}double Sales::operator[](int i)const
{if (i 0 || i MONTHS)throw bad_index(i);return gross[i];
}double Sales::operator[](int i)
{if (i 0 || i MONTHS)throw bad_index(i);return gross[i];}LabeledSales::nbad_index::nbad_index(const string lb, int ix, const string s) :Sales::bad_index(ix, s)
{lbl lb;
}LabeledSales::LabeledSales(const string lb, int yy) :Sales(yy)
{label lb;
}LabeledSales::LabeledSales(const string lb, int yy, const double* gr, int n) :Sales(yy, gr, n)
{label lb;
}double LabeledSales::operator[](int i)const
{if (i 0 || i MONTHS)throw nbad_index(Label(), i);return Sales::operator[](i);
}double LabeledSales::operator[](int i)
{if (i 0 || i MONTHS)throw nbad_index(Label(), i);return Sales::operator[](i);
}运行结果:
考查点:
异常继承[]运算符重载dynamic_cast
2024年9月12日21:33:42
