LNK2019：無法解析的外部符號_main在函數中引用_tmainCRTStartup

Question

我在博客中看到了很多這個錯誤，並且有點驚慌，我無法弄清楚爲什麼我得到這個問題標題錯誤。鏈接器子系統設置爲用於此控制檯應用程序的控制檯。

這是我的主要方法：

// HashTable.cpp : main project file. 

#include "stdafx.h" 
#include "HashTable.h" 
#include <stdio.h> 
#include <iostream> 

using namespace System; 
using namespace std; 

namespace HashTable 
{ 
int main(array<System::String ^> ^args) 
{ 
    Hashtable<String^, int>^ table = gcnew Hashtable<String^, int>(100); 

    // create dictionary with random keys and values to insert into the hashtable 

    table->Insert("one", 1); 
    table->Insert("two", 2); 

    // print hashtable keys and values 
    table->PrintKeyValuePairs(); 

    Console::ReadLine(); 
    return 0; 
} 
} 

，這裏是Hashtable類，它在呼喚：

#pragma once 

#include "stdafx.h" 
#include <iostream> 


using namespace System; 
using namespace System::Collections; 
using namespace System::Collections::Generic; 
using namespace System::Text; 
using namespace std; 

namespace HashTable 
{ 
generic <typename T1, typename T2> 
public ref class Hashtable 
{ 

public: 
    // Property to monitor size of table 
    int Size; 

    // public members 
    array<Dictionary<T1, T2>^>^ table; 


public: 
    Hashtable(int tableSize) 
    { 
     table = gcnew array<Dictionary<T1, T2>^>(tableSize); 
    } 

    void Insert(T1 key, T2 value) 
    { 
     Dictionary<T1, T2>^ newList; 
     unsigned int slot = getHashValue(key, table->Length); 
     if (table[slot] == nullptr) 
     { 
      newList = gcnew Dictionary<T1, T2>(); 
      newList->Add(key, (T2)value); 
      table[slot] = newList; 
      Size ++; 
     } 
     else 
     { 
      if (!table[slot]->ContainsKey(key)) 
      { 
       table[slot]->Add((T1)key, (T2)value); 
      } 

      else 
       Console::WriteLine(L"Key " + key + " was not added to the HashTable: Duplicate keys are not permtted."); 
     } 
    } 

    T2 GetValue(T1 key) 
    { 
     int slot = getHashValue(key, table->Length); 
     if (table[slot]->ContainsKey(key)) 
      return table[slot][key]; 
     else 
      return (T2)"The item requested could not be found."; 
    } 

private: 

    unsigned int getHashValue(T1 key, int m) 
    { 
     // convert string to arrayo of bytes 
     array<Byte>^ byteArray = gcnew array<Byte>(key->ToString()->Length); 
     int i = 0; 
     for each (char c in key->ToString()->ToCharArray(0, key->ToString()->Length)) 
     { 
      byteArray[i] = (Byte)c; 
      i++; 
     } 

     // get the unsigned int value of the bytes 
     unsigned int byteTotal = 0; 
     for (int i = 0; i < byteArray->Length; i++) 
      byteTotal += byteArray[i]; 
     return byteTotal % m; 
    } 

    // method to retrieve a list of key value pairs in hashtable 
public: 
    void PrintKeyValuePairs() 
    { 
     for (int i = 0; i < table->Length; i++) 
     { 
      if(table[i] != nullptr) 
      { 
       for each(KeyValuePair<T1, T2> kvp in table[i]) 
       { 
        T1 key = kvp.Key; 
        T2 value = kvp.Value; 
        Console::WriteLine("Key = {0}, Value = {1}", key, value); 
       } 
      } 
     } 
    } 
}; 
} 

了很多，包括加來嘗試解決這個問題。

Answer 1

請看看this，你的main（）函數必須包括本地類型 我猜「經典」 int main(int argc, char* argv[])將工作的法寶。