为什么输出结果为$23????

Question

#include
#include
using namespace std;
class Book
{
public:
char bookname[100];
double price;
int number;
public:
Book(char*,double,int);
void display();
void borrow();
void restore();
};
Book::Book(char *name,double x, int y)
{
string bookname =name;
price=x;
number=y;
}
void Book::display()
{
cout<<bookname<<price<<number<<endl;
}
void Book::borrow()
{
number-=1;
cout<<number<<endl;
}
void Book::restore()
{
number+=1;
cout<<number;
}
int main()
{
Book A("bird",2.0,3);
A.display();
return 0;

}

Answer 1

public:
char bookname[100]

string bookname =name;
名字的赋值有问题， 吧下面的string去掉试试