Stroustrup's Graph.h

Stroustrup's Graph.h

本文关键字：Graph Stroustrup      更新时间：2023-10-16

我正在学习Stroustrup的"Programming Principles…"。我试图得到一个简单的窗口程序编译，并没有运气在linux或windows。

最终，在多个问题之后，我试图包括我从他的网站得到的Graph.h，没有别的。我的错误如下(我不知道现在该怎么做，因为我假设他的代码是正确的)

$ g++ window.cpp
In file included from /usr/include/c++/4.5/ext/hash_map:60:0,
                 from /home/nathan/Documents/c++/std_lib_facilities.h:34,
                 from /usr/include/c++/4.5/Window.h:12,
                 from window.cpp:1:
/usr/include/c++/4.5/backward/backward_warning.h:28:2: warning: #warning This file includes at least one deprecated or antiquated header which may be removed without further notice at a future date. Please use a non-deprecated interface with equivalent functionality instead. For a listing of replacement headers and interfaces, consult the file backward_warning.h. To disable this warning use -Wno-deprecated.
In file included from window.cpp:2:0:
/usr/include/c++/4.5/Graph.h: In constructor ‘Graph_lib::Rectangle::Rectangle(Point, Point)’:
/usr/include/c++/4.5/Graph.h:203:43: error: invalid operands of types ‘<unresolved overloaded function type>’ and ‘<unresolved overloaded function type>’ to binary ‘operator-’
/usr/include/c++/4.5/Graph.h:203:55: error: invalid operands of types ‘<unresolved overloaded function type>’ and ‘<unresolved overloaded function type>’ to binary ‘operator-’
/usr/include/c++/4.5/Graph.h: In constructor ‘Graph_lib::Circle::Circle(Point, int)’:
/usr/include/c++/4.5/Graph.h:286:26: error: invalid operands of types ‘<unresolved overloaded function type>’ and ‘int’ to binary ‘operator-’
/usr/include/c++/4.5/Graph.h:286:32: error: invalid operands of types ‘<unresolved overloaded function type>’ and ‘int’ to binary ‘operator-’
/usr/include/c++/4.5/Graph.h: In member function ‘Point Graph_lib::Circle::center() const’:
/usr/include/c++/4.5/Graph.h:290:49: error: invalid operands of types ‘<unresolved overloaded function type>’ and ‘const int’ to binary ‘operator+’
/usr/include/c++/4.5/Graph.h:290:63: error: invalid operands of types ‘<unresolved overloaded function type>’ and ‘const int’ to binary ‘operator+’
/usr/include/c++/4.5/Graph.h: In member function ‘void Graph_lib::Circle::set_radius(int)’:
/usr/include/c++/4.5/Graph.h:292:57: error: invalid operands of types ‘<unresolved overloaded function type>’ and ‘int’ to binary ‘operator-’
/usr/include/c++/4.5/Graph.h:292:71: error: invalid operands of types ‘<unresolved overloaded function type>’ and ‘int’ to binary ‘operator-’`enter code here`
/usr/include/c++/4.5/Graph.h: In constructor ‘Graph_lib::Ellipse::Ellipse(Point, int, int)’:
/usr/include/c++/4.5/Graph.h:302:33: error: invalid operands of types ‘<unresolved overloaded function type>’ and ‘int’ to binary ‘operator-’
/usr/include/c++/4.5/Graph.h:302:40: error: invalid operands of types ‘<unresolved overloaded function type>’ and ‘int’ to binary ‘operator-’
/usr/include/c++/4.5/Graph.h: In member function ‘Point Graph_lib::Ellipse::center() const’:
/usr/include/c++/4.5/Graph.h:306:49: error: invalid operands of types ‘<unresolved overloaded function type>’ and ‘const int’ to binary ‘operator+’
/usr/include/c++/4.5/Graph.h:306:62: error: invalid operands of types ‘<unresolved overloaded function type>’ and ‘const int’ to binary ‘operator+’
/usr/include/c++/4.5/Graph.h: In member function ‘Point Graph_lib::Ellipse::focus1() const’:
/usr/include/c++/4.5/Graph.h:309:55: error: invalid operands of types ‘<unresolved overloaded function type>’ and ‘int’ to binary ‘operator+’
/usr/include/c++/4.5/Graph.h:311:66: error: invalid operands of types ‘<unresolved overloaded function type>’ and ‘int’ to binary ‘operator+’
/usr/include/c++/4.5/Graph.h: In member function ‘Point Graph_lib::Ellipse::focus2() const’:
/usr/include/c++/4.5/Graph.h:316:55: error: invalid operands of types ‘<unresolved overloaded function type>’ and ‘int’ to binary ‘operator-’
/usr/include/c++/4.5/Graph.h:318:66: error: invalid operands of types ‘<unresolved overloaded function type>’ and ‘int’ to binary ‘operator-’
/usr/include/c++/4.5/Graph.h: In member function ‘void Graph_lib::Ellipse::set_major(int)’:
/usr/include/c++/4.5/Graph.h:322:56: error: invalid operands of types ‘<unresolved overloaded function type>’ and ‘int’ to binary ‘operator-’
/usr/include/c++/4.5/Graph.h:322:70: error: invalid operands of types ‘<unresolved overloaded function type>’ and ‘int’ to binary ‘operator-’
/usr/include/c++/4.5/Graph.h: In member function ‘void Graph_lib::Ellipse::set_minor(int)’:
/usr/include/c++/4.5/Graph.h:324:56: error: invalid operands of types ‘<unresolved overloaded function type>’ and ‘int’ to binary ‘operator-’
/usr/include/c++/4.5/Graph.h:324:69: error: invalid operands of types ‘<unresolved overloaded function type>’ and ‘int’ to binary ‘operator-’
/usr/include/c++/4.5/Graph.h: In member function ‘void Graph_lib::Image::set_mask(Point, int, int)’:
/usr/include/c++/4.5/Graph.h:372:65: error: cannot resolve overloaded function ‘x’ based on conversion to type ‘int’
/usr/include/c++/4.5/Graph.h:372:74: error: cannot resolve overloaded function ‘y’ based on conversion to type ‘int’

我不知道粘贴我所有的代码是否失礼，但无论如何。我找遍了所有地方，这两天一直在努力。我现在有理由感到沮丧。请帮助。

是否包含正确的Point.h (Graph.h取决于Point.h)?也许在找到"原则"示例之前，编译器会发现其他Point.h文件。

g++ -M Window.cpp

可以帮助您确定。

我把整个示例拉下来，发现我必须修复Graph.h中的两行才能使其编译，但它们与您在Point.h或Point类型上得到错误的行无关。

在Graph.h的第140-142行，我必须更改:

private:    // prevent copying
    Vector_ref(const Vector&);
    Vector_ref& operator=(const vector&);

: 

private:    // prevent copying
    Vector_ref(const Vector_ref&);
    Vector_ref& operator=(const Vector_ref&);

我假设您已经这样做了，因为编译器正在毫无怨言地通过这些行。在此修复之后，Window.cpp编译得很好(但没有链接，因为我没有构建示例所依赖的库)。

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