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【C++ Primer Plus习题】10.8

news 2025/7/29 2:40:03

问题:

解答:
main.cpp

#include <iostream>
#include "List.h"
using namespace std;int main()
{Item item = 0;List list;cout << "请输入item(0结束):";cin >> item;while (item!=0){cin.get();list.add(item);cout << "请输入item(0结束):";cin >> item;}list.visit(visit_Item);return 0;
}

List.h

#pragma oncetypedef unsigned long Item;void visit_Item(Item&);class List
{
private:enum{MAX=10};Item m_items[MAX];int m_top;
public:List();~List();bool isempty()const;bool isfull()const;bool add(const Item& item);void visit(void (*p)(Item&));
};

List.cpp

#include "List.h"
#include <iostream>
using namespace std;List::List()
{this->m_top = 0;
}
List::~List()
{}
bool List::isempty()const
{return this->m_top == 0;
}
bool List::isfull()const
{return this->m_top == MAX;
}
bool List::add(const Item& item)
{if (isfull()){cout << "列表已满,无法添加!" << endl;return false;}this->m_items[this->m_top++] = item;return true;
}
void List::visit(void (*p)(Item&))
{for (int i = 0; i < this->m_top; i++){p(this->m_items[i]);}
}void visit_Item(Item&item)
{cout << "item: " << item << endl;
}