C++數組類的定義和實現，未在範圍中聲明？

Question

所以我一直對這個整天和它差不多的作品，但是當我用GCC編譯它，它給了我三個錯誤信息：

arrayClassDriver.cpp:11: error: 'arrayClass' was not declared in this scope 
arrayClassDriver.cpp:11: error: expected ';' before 'test' 
arrayClassDriver.cpp:13: error: 'test' was not declared in this scope 

顯然它認爲arrayClass（類的實例）是一個變量。我怎樣才能解決這個問題？

這是我的我的類定義：

//Pre and Post Conditions 
//arrayClass(int inputSize); 
//Pre: A user defined int inputSize. 
//Post: An array with size = inputSize has been created. 

//~arrayClass(); 
//Pre: A dynamically created array. 
//Post: The array has been deleted. 

//void display(); 
//Pre: A dynamically created array. 
//Post: List of all the values from the array. 

//void resize(int newSize); 
//Pre: A dynamically created array. 
//Post: An array with the new size defined by the user. 

//int& operator[](int location); 
//Pre: None. 
//Post: An operator which allows the programmer to access the array. 

//int findMaxValue(); 
//Pre: A dynamically created array. 
//Post: The max value of the array is returned. 

//int findMinValue(); 
//Pre: A dynamically created array. 
//Post: The min value of the array is returned. 

//void sort(); 
//Pre: A dynamically created array. 
//Post: A sorted array ready to be searched. 

//int search(int key); 
//Pre: A dynamically created array. 
//Post: The sought value is returned. 


#ifndef ARRAYCLASS_H 
#define ARRAYCLASS_H 

#include <iostream> 

namespace arrayClass_Namespace 
{ 
    class arrayClass 
    { 
     private: 
      int *arr; 
      const static int MAX_SIZE = 1000; 
      int size; 
     public: 
      //Constructor 
      arrayClass(int inputSize); 
      //Destructor 
      ~arrayClass(); 

      void display() const; 
      void resize(int newSize); 

      int& operator[](int); 

      int findMaxValue(); 
      int findMinValue(); 
      void sort(); 
      int search(int key); 
    }; 
} 

#endif 

這裏是我的實現（我知道我沒有寫的排序或搜索代碼還）：

#include <cassert> 
#include "arrayClass.h" 

arrayClass_Namespace::arrayClass::arrayClass(int inputSize) 
{ 
    assert(inputSize < MAX_SIZE); 
    size = inputSize; 
    arr = new int[size]; 

    for (int index = 0; index < size; index++) 
    { 
     arr[index] = 0; 
    } 
} 

arrayCLass_Namespace::arrayClass::~arrayClass() 
{ 
    delete[] arr; 
    arr = NULL; 
} 

void arrayClass_Namespace::arrayClass::display() const 
{ 
    std::cout << "\nIndex" << "\t" << "Value"; 

    for (int index = 0; index < size; index++) 
    { 
     std::cout << index << "\t" << arr[index]; 
    } 
} 

int& arrayClass_Namespace::arrayClass::operator[](int location) 
{ 
    assert(0 <= location && location < size); 
    return arr[location]; 
} 

int arrayClass_Namespace::arrayClass::findMaxValue() 
{ 
    int max = 0; 

    for (int index = 0; index < size; index++) 
    { 
     if (max < arr[index]) 
     { 
      max = arr[index]; 
     } 
     else if (max > arr[index]) 
     { 
      max = max; 
     } 
    } 
} 

int arrayClass_Namespace::arrayClass::findMinValue() 
{ 
    int min = arr[1]; 

    for (int index = 0; index < size; index++) 
    { 
     if (min > arr[index]) 
     { 
      min = arr[index]; 
     } 
     else if (min < arr[index]) 
     { 
      min = min; 
     } 
    } 
} 

void arrayClass_Namespace::arrayClass::sort() 
{ 

} 

int arrayClass_Namespace::arrayClass::search(int key) 
{ 

} 

最後，這裏是我的驅動程序（仍然需要添加一些東西，但我想這樣做第一）：

#include <cstdlib> 
#include "arrayClass.h" 

int main() 
{ 
    arrayClass test(10); 

    test.display(); 

    return EXIT_SUCCESS; 
} 

除此之外，我是正確使用顯示成員函數？自從我和班級一起工作已經有一段時間了，所以任何幫助都非常感謝。

在此先感謝！

Answer 1

你忘了這個說法

arrayClass test(10); 

爲arrayClass指定的命名空間，應

arrayClass_Namespace::arrayClass test(10); 

或者你可以寫

#include <cstdlib> 
#include "arrayClass.h" 

int main() 
{ 
    using arrayClass_Namespace::arrayClass; 

    arrayClass test(10); 

    test.display(); 

    return EXIT_SUCCESS; 
}