我曾看過幾篇關於類似內容的文章,但沒有一篇似乎對我有所幫助。如果有人能看我的代碼並告訴我我在這裏做錯了,我將不勝感激。我的老師幫不了什麼。在驅動75,因爲我無法得到它與這些編譯,將需要這方面的幫助,以及數組索引超出範圍分配的問題
ArrayDriver.cpp
#include <iostream>
#include "myArray.h"
using namespace std;
int main()
{
myArray<int> list1(5);
myArray<int> list2(5);
int i;
cout << "list1 : ";
for (i = 0 ; i < 5; i++)
cout << list1[i] <<" ";
cout << endl;
cout << "Enter 5 integers: ";
for (i = 0 ; i < 5; i++)
cin >> list1[i];
cout << endl;
cout << "After filling list1: ";
for (i = 0 ; i < 5; i++)
cout << list1[i] <<" ";
cout<< endl;
list2 = list1;
cout << "list2 : ";
for (i = 0 ; i < 5; i++)
cout << list2[i] <<" ";
cout<< endl;
cout << "Enter 3 elements: ";
for (i = 0; i < 3; i++)
cin >> list1[i];
cout << endl;
cout << "First three elements of list1: ";
for (i = 0; i < 3; i++)
cout << list1[i] << " ";
cout << endl;
myArray<int> list3(-2, 6);
cout << "list3: ";
for (i = -2 ; i < 6; i++)
cout << list3[i] <<" ";
cout<< endl;
list3[-2] = 7;
list3[4] = 8;
list3[0] = 54;
list3[2] = list3[4] + list3[-2];
cout << "list3: ";
for (i = -2 ; i < 6; i++)
cout << list3[i] <<" ";
cout<< endl;
/*
if (list1 == list2)
cout << " list 1 is equal to list2 " << endl;
else
cout << " list 1 is not equal to list2" << endl;
if (list1 != list2)
cout << " list 1 is not equal to list2 " << endl;
else
cout << " list 1 is equal to list2" << endl;
*/
//10% EXTRA CREDIT: UNCOMMENT CODE IF YOU'VE SUCCESSFULLY IMPLEMENTED THE FOLLOWING:
//cout << list1<< (list1 == list2 ? " is equal to" : " not equal to ") << list2 << endl;
//cout << list1<< (list1 != list2 ? " not equal to" : " is equal to ") << list2 << endl;
return 0;
}
myArray.h - 我註釋掉線65
#ifndef MYARRAY_H
#define MYARRAY_H
//#pragma once
#include <iostream>
//#include <assert.h>
//#include <iomanip>
//#include <string>
using namespace std;
template <class DataType>
class myArray
{
//overload for <<
//friend ostream& operator<<(ostream& out, myArray<DataType>& arr);
//overload for >>
friend istream& operator>>(istream& in, myArray<DataType>& arr);
public:
//myArray();
myArray(int size);
myArray(int start, int end);
//~myArray();
//overload []
DataType& operator[](int i);
//overload == operator
friend bool operator==(myArray<DataType> &arr1, myArray<DataType> &arr2);
//overload != operator
friend bool operator!=(myArray<DataType> &arr1, myArray<DataType> &arr2);
//overload = opertator
myArray<DataType> &operator=(const myArray<DataType> &rhs)
{
if (myDataType != NULL)
delete[]myDataType;
myDataType = new DataType[rhs.arraySize];
arraySize = rhs.arraySize;
for (int i = 0; i < arraySize; i++)
myDataType[i] = rhs.myDataType[i];
return *this;
}
//function
void SetNULL();
protected:
int startIndex;
int endIndex;
int arraySize;
//template
DataType *myDataType;
};
#endif
template <class DataType>
DataType& myArray<DataType>::operator[](int i)
{
if (i > arraySize)
{
cout << "Array out of bounds: " << endl;
}
else if (startIndex == 0)
{
return myDataType[i];
}
else
{
return myDataType[(startIndex + (i - 1))];
}
}
template <class DataType>
myArray<DataType>::myArray(int size) :
arraySize(size), startIndex(0), endIndex(size)
{
myDataType = new DataType[arraySize];
SetNULL();
}
template <class DataType>
myArray<DataType>::myArray(int start, int end) :
startIndex(start), endIndex(end)
{
if (start > end)
{
cout << "Invalid start position: " << endl;
}
else
{
arraySize = end - start;
}
myDataType = new DataType[arraySize];
SetNULL();
}
template <class DataType>
void myArray<DataType>::SetNULL()
{
for (int i = startIndex; i < endIndex; i++)
{
myDataType[i] = (DataType)0;
}
}
//overload == operator
template <class DataType>
bool operator==(myArray<DataType> &arr1, myArray<DataType> &arr2)
{
bool testBool = true;
for (int i = 0; i < arraySize; i++)
{
if (arr1[i] != arr2[i])
{
testBool = false;
}
}
return testBool;
}
//overload != operator
template <class DataType>
bool operator!=(myArray<DataType> &arr1, myArray<DataType> &arr2)
{
bool testBool = true;
for (int i = 0; i < arraySize; i++)
{
if (arr1[i] == arr2[i])
{
testBool = false;
}
}
return testBool;
}
//overload >> operator
template <class DataType>
istream& operator>> (istream &in, myArray<DataType> &aList)
{
for (int i = 0; i < aList.arraySize; i++)
in >> aList.list[i];
return in;
}
我遇到的問題是Null函數似乎沒有工作。我的老師告訴我要添加operator =功能,並搞砸了「list2」,將其設置爲要求輸入5位數字時輸入的最後一位數字。 –
您的賦值運算符在if語句中存在嚴重錯誤 - 請將編譯器警告設置爲最高。它也缺少對自賦值的檢查,並且沒有拷貝構造函數實現賦值運算符的最簡單方法是不需要實現它們。換句話說,使用vector或其他容器,編譯器會自動爲你生成這些運算符。 –