我自己寫一個程式再編譯時有問題請各位高手幫忙
謝謝
1.cpp(55) : error C2065: 'phead' : undeclared identifier
1.cpp(80) : error C2040: 'phead' : 'Book *' differs in levels of indirection from ''unknown-type''
my code------------------
# include
using namespace std;
enum euseroption_E
{
ADD_BOOK=1,
DEL_BOOK,
SEARCH_BOOK,
LIST_ALL_BOOK,
EXIT_BOOK,
};
struct Book
{
char seBookName[20];
int nISBN;
int nprice;
char szAuthorName [20];
Book *pNextbook;
};
void ulist()
{
cout << "1.加書" << endl;
cout << "2.刪書" << endl;
cout << "3.找書" << endl;
cout << "4.列出書" << endl;
cout << "5.離開" << endl;
}
void Addbook()
{
Book *pNewBook =new Book;
pNewBook ->pNextbook=0;
cout << "請輸入書名----" < cin >> pNewBook->seBookName;
cout << "請輸入作者----" < cin >> pNewBook->szAuthorName;
cout << "請輸入價格----" < cin >> pNewBook->nprice;
cout << "請輸入ISBN----" < cin >> pNewBook->nISBN;
}
void listbook()
{
Book *pcurrentbook=0;
pcurrentbook=phead;
int ncounter=1;
while (0 != pcurrentbook){
cout << ncounter << "." < << "書名" << pcurrentbook ->seBookName < << "作者" << pcurrentbook ->szAuthorName < << "價格" << pcurrentbook ->nprice < << "ISBN" << pcurrentbook ->nISBN < pcurrentbook=pcurrentbook ->pNextbook;
}
}
void Delbook()
{
}
void Searchbook()
{
}
Book *phead;
void main()
{
ulist();
cout <<"請輸入選項---" < int ucheck=0 ;
cin >>ucheck;
switch (ucheck){
case ADD_BOOK:
{ cout << "加書" ;
Book *pNewBook = new Book;
pNewBook->pNextbook = phead;
Addbook();
break;
}
case DEL_BOOK:
{ cout << "刪書" ;
Delbook();
break;
}
case SEARCH_BOOK:
{ cout << "找書" ;
Searchbook();
break;
}
case LIST_ALL_BOOK:
{ cout << "列出" ;
listbook();
break;
}
case EXIT_BOOK:
{ cout << "離開" << ucheck ;
break;
}
default:
{ cout <<"選擇錯誤" < break;
}
}
}
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//我改了以后在Boland C++6.0编译通过。
# include
using namespace std;
///////////////////////////////////////////////////////////////////////
enum euseroption_E
{ ADD_BOOK=1,DEL_BOOK,SEARCH_BOOK,LIST_ALL_BOOK,EXIT_BOOK};
///////////////////////////////////////////////////////////////////////
struct Book
{
char seBookName[20];
int nISBN;
int nprice;
char szAuthorName [20];
Book *pNextbook;
};
////////////////////////////////////////////////////////////////////////
//--------------------------------------------------------------------
Book *phead;
void ulist()
{
cout << "1.加書" << endl;
cout << "2.刪書" << endl;
cout << "3.找書" << endl;
cout << "4.列出書" << endl;
cout << "5.離開" << endl;
}
//------------------------------------------------------------------------
void Addbook()
{
Book *pNewBook =new Book;
pNewBook ->pNextbook=0;
cout << "請輸入書名----" < cin >> pNewBook->seBookName;
cout << "請輸入作者----" < cin >> pNewBook->szAuthorName;
cout << "請輸入價格----" < cin >> pNewBook->nprice;
cout << "請輸入ISBN----" < cin >> pNewBook->nISBN;
}
//------------------------------------------------------------------------
void listbook()
{
Book *pcurrentbook=0;
pcurrentbook=phead;
int ncounter=1;
while (0 != pcurrentbook)
{
cout << ncounter << "." < << "書名" << pcurrentbook ->seBookName < << "作者" << pcurrentbook ->szAuthorName < << "價格" << pcurrentbook ->nprice < << "ISBN" << pcurrentbook ->nISBN < pcurrentbook=pcurrentbook ->pNextbook;
}
}
//------------------------------------------------------------------------
void Delbook()
{
}
//-----------------------------------------------------------------------
void Searchbook()
{
}
//------------------------------------------------------------------------
void main()
{
ulist();
cout <<"請輸入選項---" < int ucheck=0 ;
cin >>ucheck;
switch (ucheck)
{
case ADD_BOOK:{
cout << "加書" ;Book *pNewBook = new Book;
pNewBook->pNextbook = phead;
Addbook();
break;
}
case DEL_BOOK:{
cout << "刪書" ;
Delbook();
break;
}
case SEARCH_BOOK:{
cout << "找書" ;
Searchbook();
break;
}
case LIST_ALL_BOOK:{
cout << "列出" ;
listbook();
break;
}
case EXIT_BOOK:{
cout << "離開" << ucheck ;
break;
}
default:{
cout <<"選擇錯誤" < }
}
}
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