汽车管理程序（数据结构课程练习）
头文件
#pragma once
#ifndef ARRAYLIST_H
#define ARRAYLIST_H
#include<iostream>
#include<algorithm>
#include<fstream>
#include<string.h>
#define defaultSize 100
using namespace std;
typedef struct
{
char brand[20];
char type[20];
char color[20];
char car_number[20];
int year;
int month;
int day;
}Car;
class Alist
{
private:
int maxSize; //Maximum size of list
int listSize; //Number of list items now
int curr; //Position of current element
Car* listArray; //Array holding list elements
public:
//Car* listArray; //Array holding list elements
Alist(int size = defaultSize) {//Constructor
maxSize = size;
listSize = curr = 0;
listArray = new Car[maxSize];
}
~Alist() { delete[] listArray; }//Destructor
void clear() { //Reinitaialize the list
delete[] listArray; //Remove the array
listSize = curr = 0; //Reset the size
listArray = new Car[maxSize]; //Recreate the array
}
bool sortfun(Car &A,Car &B) //the principle to sort
{
if (A.year < B.year)
return true;
else if (A.year > B.year)
return false;
else
{
if (A.month < B.month)
return true;
else if (A.month > B.month)
return false;
else
{
if (A.day < B.day)
return true;
else
return false;
}
}
}
void insert(Car &it) { //Insert "it" at current position and sort
if (listSize >= maxSize)
cout << " List capacity exceeded" << endl;
listArray[listSize++] = it;
Car temp;
for (int i = 0; i < listSize; i++)
{
for (int j = i; j < listSize; j++)
{
if (sortfun(listArray[j], listArray[i])) { //Exchange the two element to sort
temp = listArray[i];
listArray[i] = listArray[j];
listArray[j] = temp;
}
}
}
}
void inputNew() //Add a new car
{
Car c;
cout << endl << endl << endl << " Please input the information for the new car." << endl;
cout << endl << " Brand: ";
cin >> c.brand;
cout << " Type: ";
cin >> c.type;
cout << " Color: ";
cin >> c.color;
cout << " Car number: ";
cin >> c.car_number;
cout << " Date(y-m-d): ";
cin >> c.year >> c.month >> c.day;
insert(c);
cout << endl << " Add succeeded. Press any button to continue..." << endl;
}
void modify(int pos) //Modify the information of the car
{
cout << " Are you sure that you want to modify the car?" << endl;
cout << " 1.Yes 2.No " << endl;
int n;
cin >> n;
if (n == 1) //Sure to modify
{
int modi;
cout << " 1.Brand 2.Type 3.Color 4.Car number 5.Manufacture date" << endl;
cout << " Please choose what do you want to modify:" << endl;
cin >> modi;
Car c;
switch (modi)
{
case 1:
cin >> c.brand;
memcpy(listArray[pos].brand, c.brand, 20); //Modify the brand of the car
break;
case 2:
cin >> c.type;
memcpy(listArray[pos].type, c.type, 20); //Modify the type of the car
break;
case 3:
cin >> c.color;
memcpy(listArray[pos].color, c.color, 20); //Modify the color of the car
break;
case 4:
cin >> c.car_number;
memcpy(listArray[pos].car_number, c.car_number, 20); //Modify the car number of the car
break;
case 5:
cin >> c.year >> c.month >> c.day;
if (c.year > 2018 || c.month <= 0 || c.month > 12 || c.day <= 0 || c.day > 31) //Make sure the information is valid
cout << " Wrong date!!!" << endl;
//Modify the manufacture date of the car
listArray[pos].year = c.year;
listArray[pos].month = c.month;
listArray[pos].day = c.day;
break;
}
cout << " Have Done!" << endl;
getCar(pos);
}
}
void remove(int pos) { //Remove and return the current element
cout << " Are you sure that you want to delete the car?" << endl;
cout << " 1.Yes 2.No " << endl;
int n;
cin >> n;
if (n == 1) //Sure to remove
{
if ((pos < 0) || (pos >= listSize))
cout << " No element" << endl;
for (int i = pos; i < listSize - 1; i++) { //Shift the elements down
listArray[i] = listArray[i + 1];
}
listSize--;
cout << " The car hae been deleted!" << endl;
}
}
void getCar(int pos) { //Get the car at the special position
if (pos < 0 || pos >= listSize)
cout << " Pos out of range" << endl;
else
{ //Print the information of the car
cout << " Num: " << pos + 1 << endl;
cout << " Brand: " << listArray[pos].brand << endl;
cout << " Type: " << listArray[pos].type << endl;
cout << " Color: " << listArray[pos].color << endl;
cout << " Car number: " << listArray[pos].car_number << endl;
cout << " Manufacture date: " << listArray[pos].year << "-" <<
listArray[pos].month << "-" << listArray[pos].day << endl;
}
}
void display() const { //Print all the car
for (int i = 0; i <= listSize - 1; i++) {
cout << " *************************************" << endl;
cout << " Num: "<< i + 1 << endl;
cout << " Brand: " << listArray[i].brand << endl;
cout << " Type: " << listArray[i].type << endl;
cout << " Color: " << listArray[i].color << endl;
cout << " Car number: " << listArray[i].car_number << endl;
cout << " Manufacture date: " << listArray[i].year << "-"
<< listArray[i].month << "-" << listArray[i].day << endl;
}
}
void findPos() //Find the position of the car
{
int n;
cin >> n;
if (n == 6) {
int num;
cout << " Please enter the number of the car you want to find: ";
cin >> num;
getCar(num - 1);
}
else if (n == 5) {
int y;
cout << " Please enter the year of the car you want to find: ";
cin >> y;
getPos(y);
}
else {
char a[20];
cout << " Please enter the parament of the car you want to find: ";
cin >> a;
getPos(a, n);
}
}
void getPos(char a[],int n) //Get the position of the car
{
switch (n)
{
case 1:
for (int i = 0; i < listSize; i++)
{
if (judge(a, listArray[i].brand)) //Compare a and brand of every car in list
getCar(i);
}
break;
case 2:
for (int i = 0; i < listSize; i++)
{
if (judge(a, listArray[i].type)) //Compare a and type of every car in list
getCar(i);
}
break;
case 3:
for (int i = 0; i < listSize; i++)
{
if (judge(a, listArray[i].color)) //Compare a and type of every car in list
getCar(i);
}
break;
case 4:
for (int i = 0; i < listSize; i++)
{
if (judge(a, listArray[i].car_number)) //Compare a and type of every car in list
getCar(i);
}
break;
}
}
void getPos(int y) //Get the position of the car
{
for (int i = 0; i < listSize; i++)
{
if (y == listArray[i].year)
getCar(i);
}
}
bool judge(char a[], char b[]) //Judge whether the two is the same
{
int n = 0;
if (strlen(a) != strlen(b))
return 0;
else
{
while (a[n] != '\0'&&b[n] != '\0')
{
if (a[n] == b[n])
n++;
else
return 0;
}
}
return 1;
}
#pragma warning(disable:4996)
void read() //Read the information of the car into listArray
{
ifstream fin("Car.txt"); //Create an object of ifstream
string str; //Store the string read just now
char sstr[20]; //Used to transfer string to an array of char
int flag = 0; //Help to judge how many string has been read
Car c; //Temporarily store the information of the car
if (fin) //Judge whether the file exist
{
while (fin >> str) //Do the instructions when reading the string
{
flag++;
switch (flag)
{
case 1:
strcpy(c.brand, str.c_str()); //Get the brand of the car
break;
case 2:
strcpy(c.type, str.c_str()); //Get the type of the car
break;
case 3:
strcpy(c.color, str.c_str()); //Get the color of the car
break;
case 4:
strcpy(c.car_number, str.c_str()); //Get the car number of the car
break;
case 5:
strcpy(sstr, str.c_str()); //Transfer the string to an array of char
c.year = atoi(sstr); //Transfer an array of char to int and get year of manufacture of the car
break;
case 6:
strcpy(sstr, str.c_str()); //Transfer the string to an array of char
c.month = atoi(sstr); //Transfer an array of char to int and get month of manufacture of the car
break;
case 7:
strcpy(sstr, str.c_str()); //Transfer the string to an array of char
c.day = atoi(sstr); //Transfer an array of char to int and get day of manufacture of the car
insert(c); //Insert the car after geting all the information
flag = 0; //Reset the flag to 0 and collect the information of the car again
break;
}
}
cout << sizeof(Car) << " " << sizeof(listArray[0]);
fin.close(); //Close the file
}
else
cout << " Not found!" << endl;
}
void save() //Save the information
{
ofstream fout("Car.txt"); //Create an object of ofstream
if (fout) //Judge whether the file exist
{
for (int i = 0; i < listSize; i++) //Store the information of the car into the file
{
fout << listArray[i].brand << " ";
fout << listArray[i].type << " ";
fout << listArray[i].color << " ";
fout << listArray[i].car_number << " ";
fout << listArray[i].year << " " << listArray[i].month << " " << listArray[i].day << endl;
}
}
else
cout << " Not found!" << endl;
fout.close();
}
};
#endif
源文件
#include<iostream>
#include<fstream>
#include<string>
#include<iomanip>
#include<stdlib.h>
#include"AList.h"
using namespace std;
int main()
{
int instru;
Alist L;
//Build the image for the user
cout << " * * * * * *欢迎使用大松公司汽车信息管理* * * * * *" << endl << endl;
cout << " 对公司的汽车你享有信息分享权，但是你得妥善驾驶" << endl;
cout << " = =" << endl;
cout << " = 1.输入汽车信息 2.显示汽车信息 =" << endl;
cout << " = =" << endl;
cout << " = 3.查找汽车信息 4.删除汽车信息 =" << endl;
cout << " = =" << endl;
cout << " = 5.修改汽车信息 0.退出管理系统 =" << endl;
cout << " = =" << endl;
cout << " 公司的车辆只允许工作之用 " << endl << endl;
cout << " 请输入功能选项：" << endl;
L.read(); //Read the file into the list
//Do instructions when users enter the function number
while (cin >> instru)
{
switch (instru)
{
case 1:
L.inputNew();
break;
case 2:
L.display();
break;
case 3:
cout << " 1.Brand 2.Type 3.Color 4.Car number 5.Manufacture year 6.Num" << endl;
cout << " Please choose the parameter you want to rely on and enter: " << endl;
L.findPos();
break;
case 4:
cout << " Please enter the number of the car: ";
int n4;
cin >> n4;
L.getCar(n4 - 1);
L.remove(n4 - 1);
break;
case 5:
cout << " Please enter the number of the car: ";
int n5;
cin >> n5;
L.getCar(n5 - 1);
L.modify(n5 - 1);
break;
case 0:
cout << " Do you want to save the changes?" << endl;
cout << " 1.Save 2.Not to Save" << endl;
int n0;
cin >> n0;
if (n0 == 1)
L.save();
cout << " Are you sure that you want to exit?" << endl;
cout << " 1.Exit 2.Stay" << endl;
int m0;
cin >> m0;
if(m0==1)
//Or exit(0);
return 0; //Exit the program
break;
}
}
system("pause");
return 0;
}
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