c**z
发帖数: 669 | 1 complier能过，但是run不过，请指教
class book
{
public:
book(long id1,string detail1 )
{ id=id1; detail=detail1;
}
book()
{
}
void addbook(long id2, string detail2)
{ book b(id2,detail2);
books.push_back(b);
}
private:
long id;
string detail;
static vector books;
};
void main()
{
book b1;
b1.addbook(1,"a");
b1.addbook(2,"b");
} | q****x
发帖数: 7404 | 2 add this line after the class definition:
vector book::books;
the line of static ... in your code is a declaration, not definition. the
variable must be defined before used.
【在 c**z 的大作中提到】
: complier能过，但是run不过，请指教
: class book
: {
: public:
: book(long id1,string detail1 )
: { id=id1; detail=detail1;
: }
: book()
: {
: }
| l***i
发帖数: 1309 | 3 In addition, don't you need to declare the function with static? | a********m
发帖数: 15480 | | f*******t
发帖数: 7549 | |
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