用JAVA工程思想理解C++

0 关于头文件<.h>(不会玩的时候，看看一般就能想起来)

0.1 依赖管理

0.1.1 Domain.h

#pragma once
#include<string.h>
#include<stdio.h>
#include<time.h>
#include<iostream>
#include"Exit.h"
#include"Menu.h"
#include"Add.h"
#include"Display.h"
#include"Delete.h"
#include"Empty.h"
#include"Revise.h"
#include"Find.h"
#include"Test.h"


using namespace std;

0.1.2 Menu.h

#pragma once
#include<string.h>
#include<stdio.h>
#include<time.h>
#include<iostream>

using namespace std;

extern int menu();

0.1.3 Add.h

#pragma once
#include"Data.h"

using namespace std;



extern int add();
extern int testAdd(string name, string sex, int age, string phoneNum, string address);

0.1.4 Delete.h

#pragma once
#include"Display.h"
#include"Data.h"
using namespace std;

int deletes();

0.1.5 Display.h

#pragma once
#include"Data.h"

using namespace std;

int display();

0.1.6 Empty.h

#pragma once
#include"Domain.h"
using namespace std;

int empty();

0.1.7 Find.h

#pragma once
#include"Domain.h"
using namespace std;


int find();

0.1.8 Revise.h

#pragma once
#include"Domain.h"
using namespace std;

int revise();

0.1.9 Exit.h

#pragma once
#include<string.h>
#include<stdio.h>
#include<time.h>
#include<iostream>


using namespace std;

extern int Exit();

0.1.10 Data.h

#pragma once
#include<string.h>
#include<stdio.h>
#include<time.h>
#include<iostream>
#include<fstream>
#include<vector>
#include<tchar.h>
#include"Domain.h"
#define MAX 1024


using namespace std;


struct People;
extern int file();
extern int num();
extern int deletes(int);
extern int emptyData();
extern int reviseData(int);
extern People* displayPeople();
extern People findData(string);
extern People addPeople(People );

struct People
{
	string name;
	string sex;
	int age;
	string phoneNum;
	string address;

};

0.1.11 Test.h

#pragma once
#include"Domain.h"


extern int test();

关于源文件<.cpp>

1.1 -->类似于表示层

1.1.1 Domain.cpp

#pragma once
#include"Domain.h"






//菜单


int main() {
	
	
	int select;
	A:
	select = menu();
	cout << select << endl;
	//{"1.添加联系人"},
	
	
	switch (select)
	{
	case 1: add();
		goto A;
	case 2: display();
		goto A;
	case 3: deletes();
		goto A;
	case 4: find();
		goto A;
	case 5:revise();
		goto A;
	case 6:empty();
		goto A;
	case 7: test();
		goto A;
	default :Exit();
		break;
		
	}
}

1.2 -->类似于业务层

1.2.1 Add.cpp

#include"Add.h"

//People addPeoole(People p) {
//	return p;
//}

int add() {
	People p;
	
	cout << "请输入名字：" << endl;
	cin >> p.name;
	cout << "请输入性别：" << endl;
	cin >> p.sex;
	cout << "请输入年龄：" << endl;
	cin >> p.age;
	cout << "请输入电话：" << endl;
	cin >> p.phoneNum;
	cout << "请输入地址：" << endl;
	cin >> p.address;

	addPeople(p);
	return 0;
}
int testAdd(string name ,string sex,int age,string phoneNum,string address) {
	People pt;
	pt.name = name;
	pt.sex = sex;
	pt.age = age;
	pt.phoneNum = phoneNum;
	pt.address = address;
	addPeople(pt);
	return 0;
}

1.2.2 Delete.cpp

#include"Delete.h"

int deletes() {
	display();
	int seleteNum;
	cout << "请输入要删除的序号：" << endl;
	cin >> seleteNum;
	deletes(seleteNum);
	return 0;
}

1.2.3 Display.cpp

#include"Display.h"


int display() {
	People* p = displayPeople();
	int num1 = num();
	for (int i = 0; i < num1; i++)
	{
		cout << i + 1 << ":\n"
			<< "\t" << "姓名：" << p[i].name << endl
			<< "\t" << "年龄：" << p[i].age << endl
			<< "\t" << "性别：" << p[i].sex<<endl
			<< "\t" << "住址：" << p[i].address<<endl
			<< "\t" << "电话：" << p[i].phoneNum << endl;

	}
	return 0;
}

1.2.4 Empty.cpp

#include"Empty.h"

int empty() {
	int select;
	cout << "确认要清空吗？" << endl;
	cout << "1.清空" << endl << "2.取消" << endl;
	cin >> select;
	if (select == 1)
	{
		emptyData();
	}
	else {
		menu();
	}
	return 0;
}

1.2.5 Exit.cpp

#pragma once
#include"Exit.h"


extern int Exit(void);


int Exit(void) {
	cout << "再见！" << endl;
	exit(0);
	return 0;
}

1.2.6 Find.cpp

#include"Find.h"

int find() {
	string selectFind;
	cout << "请输入要查询的姓名：" << endl;
	cin >> selectFind;
	People p = findData(selectFind);
	cout << "姓名是" << p.name << "的：" << endl
		<< "\t电话是：" << p.phoneNum << endl
		<< "\t年龄是：" << p.age << endl
		<< "\t性别是：" << p.sex << endl
		<< "\t地址是：" << p.address << endl;
	return 0;

}

1.2.7 Menu.cpp

#pragma once
#include"Menu.h"

int menu(void) {
	const int num1 = 29;
	const int num2 = 9;
	int select;
	string menu[num1][num2];
	string menuStr[num2 - 2] = {
		{"1.添加联系人"},
		{"2.显示联系人"},
		{"3.删除联系人"},
		{"4.查询联系人"},
		{"5.修改联系人"},
		{"6.清空联系人"},
		{"0.退出通讯录"}
	};
	for (int i = 0; i < num2; i++)
	{
		if (i == 0) {
			cout << "*****************************" << endl;
		}
		else if (i == num2 - 1) {
			cout << "*****************************" << endl;
		}
		else
		{
			cout << "*****" << "\t" << menuStr[i - 1] << "\t" << "*****" << endl;
		}

	}
	cout << "请选择:" << endl;
	cin >> select;
	return select;

}

1.2.8 Revise.cpp

#include"Revise.h"

int revise() {
	People p;
	int selectNum;
	cout << "请输入要修改的序号" << endl;
	display();
	cin >> selectNum;
	add();
	reviseData(selectNum);
	display();
	return 0;
}

1.2.9 Test.cpp

#include"Test.h"
#include<string>



int test() {
	string tname;
	string tsex;
	int tage;
	string tphoneNum;
	string taddress;
	for (int  i = 0; i < 104; i++)
	{
		tname = to_string(i) + "n";
		tsex = to_string(i) + "s";
		tage = i;
		tphoneNum = to_string(i) + "p";
		taddress = to_string(i) + "a";
		testAdd(tname, tsex, tage, tphoneNum, taddress);
	}
	return 0;
}

2 数据层 Data.cpp

#pragma once
#include"Data.h"


People* pArr = new People[1048576];
int i = 0;
People* pp = NULL;

People addPeople(People p) {
	pArr[i] = p;
	file();
	i++;
	return p;
}
int file() {
	ofstream datafile;
	datafile.open("记事本.txt", ofstream::app);
	datafile << "姓名:" << pArr[i].name << "-"
		<< "年龄:" << pArr[i].age << "-"
		<< "性别:" << pArr[i].sex << "-"
		<< "住址:" << pArr[i].address << "-"
		<< "电话:" << pArr[i].phoneNum << "-" << endl;
	datafile.close();
	return 0;
}
People* displayPeople() {
	return pArr;
}
int num() {
	return i;
}
int deletes(int j) {
	for (int k = j-1; k < i; k++)
	{
		pArr[k] = pArr[k + 1];
	}
	i--;
	return 0;
}
People findData(string selectFind) {
	People findPeople;
	
	for (int j = 0; j < i + 1; j++)
	{
		if (pArr[j].name == selectFind) {
		 findPeople = pArr[j];
		 
		}
		
	}
	if (findPeople.name != selectFind) {
		cout << "查无此人" << endl;
	}
	return findPeople;
}
int reviseData(int num) {
	//目前只会指针操作，有机会再研究
	int serial = num - 1;
	People* pas = &pArr[serial];
	People* pai = &pArr[i -1 ];
	
	*pas = *pai;
	
	i--;
	return 0;
}
int emptyData() {
	pArr = {};
	menu();
	return 0;
}