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我想在其中創建一個具有另一個類的對象的動態數組的類。基礎外部類是Sport,次要(在數組內)是Player。我有一些問題讓add函數工作,現在我終於可以工作了(我想)我從顯示中獲取錯誤。當我調用播放器類的一部分的顯示功能時,出現讀取錯誤。我會在這裏發佈最大的一段代碼,如果有人注意到wtf我錯了,請儘快告訴我。我需要儘快完成這項工作,分配工作已經過去很久了,未來的任務有助於建立它。我不只需要一個工作版本,我需要了解發生了什麼問題。一類中的類的動態數組
#include "Sport.h"
#include <iostream>
using std::cout;
using std::endl;
using std::cin;
// since we're going to call these from within the class
// consider making all but DisplayMenu() private
Sport::Sport() : array(0),length(0)
{
}
Sport::~Sport()
{
}
void Sport::DisplayMenu()
{
bool exit(false);
char entry(0);
while(exit != true) // clarity
{
cout << "\nOREGON INSTITUTE OF TECHNOLOGY\n" << endl;
cout << " A - Add Player" << endl;
cout << " S - Search/Display a Player" << endl;
cout << " D - Display all Players" << endl;
cout << " C - Display Current Count of Players" << endl;
cout << " E - Exit/n" << endl;
cin >> entry;
switch (entry)
{
case 'A' :
Add();
break;
case 'S' :
Search();
break;
case 'D' :
List();
break;
case 'C' :
cout << "Currently " << length << " Players.";
break;
case 'E' :
exit = true;
break;
default :
break;
}
}
}
void Sport::Add() //have array[] and length
{
Player **temp = new Player *[length+1];
for (int i = 0; i < length; i++)
{
temp[i] = array[i];
}
temp[length] = &PromptUser();
length++;
delete [] array;
array = temp;
}
void Sport::List()
{
for (int i = 0; i < length; i++)
(*array)[i].Display(); // <---this line is crashing the program.
}
void Sport::Search() const
{
}
Player Sport::PromptUser()
{
char name[25];
cout << "Enter name: ";
cin >> name;
int grade(0);
cout << "Enter grade: ";
cin >> grade;
double gpa(0.0);
cout << "Enter gpa: ";
cin >> gpa;
Player result(name, grade, gpa);
return result;
}
您沒有包含'Sport.h' – Ayjay