南航C++课程设计 图书库存管理系统
在南航四年的时间里面，有件事情是值得吹逼的，就是我的C++考了100分。在这里分享C++课程设计文件给大家，仅供大家参考。
#include <iostream>
#include <fstream>
#include <cstdlib>
#include <iomanip>
#include <cstring>
using namespace std;
class Book
{
char bookNo[20], bookName[20];
int Num;
public:
Book(char *nop =NULL, char *nap =NULL, int n =0)
{
if(nop)strcpy(bookNo, nop);
if(nap)strcpy(bookName, nap);
Num = n;
}
void Show()
{
cout << left << setw(20) << bookNo << left << setw(20) << bookName << left << setw(20) << Num << endl;
}
void Print(ofstream &out)
{
out << left << setw(20) << bookNo << left << setw(20) << bookName << left << setw(20) << Num << endl;
}
void setInfo(char *nop, char *nap, int n)
{
strcpy(bookNo, nop);
strcpy(bookName, nap);
Num = n;
}
void setNum(int n)
{
Num = n;
}
int getNum()
{
return Num;
}
friend class bookList;
};
class bookList
{
Book *Books;
int curLen, maxLen;
public:
bookList(int len =20)
{
maxLen = len;
curLen = 0;
Books = new Book[maxLen];
}
~bookList()
{
delete []Books;
}
void appendBook(char *nop, char *nap, int n)
{
if(curLen == maxLen)
{
Book *newBooks = new Book[maxLen+10];
for(int i=0; i<curLen; i++)
*(newBooks+i)=*(Books+i); //简单的浅拷贝
delete []Books;
Books = newBooks;
maxLen += 10;
}
getBooks(curLen++).setInfo(nop, nap, n);
}
int isIn(char *bkNo)
{
for (int i=0; i<curLen; i++)
{
if(strcmp(getBooks(i).bookNo,bkNo)==0) return i;
}
return -1;
}
Book & getBooks(int i)
{
return *(Books+i);
}
void deleteBook(char *bkNo)
{
for (int i=isIn(bkNo); i<curLen-1; i++)
*(Books+i) = *(Books +i +1); //curLen 控制长度，最后一个不用管，有新数据时会将其覆盖
curLen--;
}
void sortBooks()
{
int min;
Book temp;
for (int i=0; i<curLen-1; i++)
{
min = i;
for (int j=i+1; j<curLen; j++)
if(strcmp(getBooks(min).bookNo, getBooks(j).bookNo)==1) min = j;
if (min != i)
{
temp = getBooks(min);
getBooks(min) = getBooks(i);
getBooks(i) = temp;
}
}
cout << "按书号的升序排列了图书" << endl;
}
void showAll()
{
for (int i =0; i<curLen; i++)
getBooks(i).Show();
}
int curBookLen()
{
return curLen;
}
void setCurBookLen(int len)
{
curLen = len;
}
void initBookList()
{
readFromFile("bookdata.txt");
}
void readFromFile(char *filename)
{
int len;
char bkNo[20],bkName[20];
int Num;
ifstream infile(filename);
infile >> len;
for (int i=0; i<len; i++)
{
infile >> bkNo >> bkName >> Num;
appendBook(bkNo, bkName, Num);
}
infile.close();
cout << "从文件插入了" << len << "条记录" << endl;
}
void writeToFile(char *filename)
{
ofstream outfile(filename);
outfile << curLen << endl;
for (int i=0; i<curLen; i++)
getBooks(i).Print(outfile);
outfile.close();
cout << "向文件输出了" << curLen << "条记录" << endl;
}
};
void appendRecord(bookList &booksObj)
{
char bkNo[20], bkName[20];
int Num;
cout << " 请输入新增书籍的书号、书名和数量: ";
cin >> bkNo >> bkName >> Num;
booksObj.appendBook(bkNo, bkName, Num);
}
void delRecord(bookList &booksObj)
{
char bkNo[20];
cout << " 请输入您要删除的书号: ";
cin >> bkNo;
if (booksObj.isIn(bkNo) >-1) booksObj.deleteBook(bkNo);
else cout << "您要删除的书不存在" << endl;
}
void showAll(bookList &booksObj)
{
booksObj.showAll();
}
void query(bookList &booksObj)
{
char bkNo[20];
int i;
cout << "请输入书号: ";
cin >> bkNo;
if ((i=booksObj.isIn(bkNo))>-1)
{
cout << "该书为";
booksObj.getBooks(booksObj.isIn(bkNo)).Show();
}
else
cout << "没有该图书！" << endl;
}
void addBooks(bookList &booksObj)
{
int i,Num, number;
char bkNo[20];
cout << "请输入您要入库的书的书号和数量: ";
cin >> bkNo >> number;
if((i=booksObj.isIn(bkNo)) > -1)
{
Num = booksObj.getBooks(i).getNum();
booksObj.getBooks(i).setNum(Num+number);
}
else
{
cout << "该书不存在，请增加一条记录" << endl;
appendRecord(booksObj);
}
}
void sellBooks(bookList &booksObj)
{
int i, Num, sell;
char bkNo[20];
cout << "请输入您要销售书的书号、数量: " << endl;
cin >> bkNo >> sell;
if((i=booksObj.isIn(bkNo)) > -1)
{
Num = booksObj.getBooks(i).getNum();
if(Num<sell) cout << "库存不足" << endl;
else
{
booksObj.getBooks(i).setNum(Num-sell);
cout << "销售了" << sell << "本书" << endl;
}
}
else cout << "该书不存在，请增加一条记录" << endl;
}
void appendFromTxtFile(bookList &booksObj)
{
char filename[20];
cout << "请输入文件名: ";
cin >> filename;
booksObj.readFromFile(filename);
}
void writeToTxtFile(bookList booksObj)
{
char filename[20];
cout << "请输入文件名: ";
cin >> filename;
booksObj.writeToFile(filename);
}
void sortByNo(bookList &booksObj)
{
booksObj.sortBooks();
}
void deleteAll(bookList &booksObj)
{
booksObj.setCurBookLen(0);
}
char Quit(bookList &booksObj)
{
char flag;
cout << "Are you sure to quit? input y or n :";
cin >> flag;
if(flag == 'y') booksObj.writeToFile("bookdata.txt");
return flag;
}
int menu_select()
{
char *menu[11] = {
"1. 追加图书记录",
"2. 删除图书记录",
"3. 查询所有图书记录",
"4. 查询图书",
"5. 图书入库",
"6. 图书销售",
"7. 批量导入图书",
"8. 导出图书记录",
"9. 按书号排序",
"10. 删除全部图书记录",
"0. 退出"
};
int choice;
do{
system("cls");
cout << " 图书库存管理系统" << endl << endl;
cout << " =================================" << endl;
for(int i=0; i<11; i++)
cout << " " << menu[i] << endl;
cout << " =================================" << endl;
cout << "请输入选择： ";
cin >> choice;
}while(choice<0 || choice>10);
return choice;
}
int main()
{
bookList booksObj;
int sel;
booksObj.initBookList();
for (;;)
{
switch(sel=menu_select())
{
case 1:appendRecord(booksObj);system("pause");break;
case 2:delRecord(booksObj);system("pause");break;
case 3:showAll(booksObj);system("pause");break;
case 4:query(booksObj);system("pause");break;
case 5:addBooks(booksObj);system("pause");break;
case 6:sellBooks(booksObj);system("pause");break;
case 7:appendFromTxtFile(booksObj);system("pause");break;
case 8:writeToTxtFile(booksObj);system("pause");break;
case 9:sortByNo(booksObj);system("pause");break;
case 10:deleteAll(booksObj);system("pause");break;
case 0:
if(Quit(booksObj) != 'y') continue;
}
if(sel == 0) break;
}
return 0;
}