小编use*_*433的帖子

我正在尝试为Array类重载运算符<< >>!= == =和[].应用程序在运行时崩溃,但没有显示编译错误.什么可能是错的？IDE使用了dev c ++

这是array.h

#ifndef ARRAY_H
#define ARRAY_H

#include <iostream>
using namespace std;

class Array{
  friend ostream & operator << ( ostream &, const Array & );
  friend istream & operator >> ( istream &, Array &);
  private:
         int size;
         int * ptr;
  public:
         Array ( int = 10 );
         Array ( const Array & ); //copy constructor
         ~Array ();
         const Array &operator=( const Array & ); 
         bool operator == ( const Array & ) const; 
         bool …

我收到一个编译错误，说“左”和“右”不明确。

我是否在错误的地方宣布左，右？

• 在main内部声明也无济于事
• 将函数定义移至main上方无济于事

我该如何解决？

最小测试用例：

#include <iostream>
using namespace std;
int left = 0, right = 0;
int main()
{
    cout << left;
    cout << right;
}

正在给：

prog.cpp: In function ‘int main()’:
prog.cpp:6:13: error: reference to ‘left’ is ambiguous
prog.cpp:3:5: error: candidates are: int left
In file included from /usr/include/c++/4.7/ios:43:0,
                 from /usr/include/c++/4.7/ostream:40,
                 from /usr/include/c++/4.7/iostream:40,
                 from prog.cpp:1:
/usr/include/c++/4.7/bits/ios_base.h:918:3: error:
             std::ios_base& std::left(std::ios_base&)
prog.cpp:7:13: error: reference to ‘right’ is ambiguous
prog.cpp:3:15: error: candidates are: int right
In file included from /usr/include/c++/4.7/ios:43:0, …