使提升工作（Visual Studio 2010 Windows 2007）答案

【问题标题】：making boost work (visual studio 2010 windows 2007)使提升工作（Visual Studio 2010 Windows 2007）
【发布时间】：2015-04-19 12:06:10
【问题描述】：

我正在尝试在 Windows 7 上的 Visual Studio 2010 上使用 boost。我在这里遵循了这个很好的解释-link。但没有成功。

我收到很多错误：

1>c:\users\documents\visual studio 2010\projects\scenarioanalyzer\scenarioanalyzer\main.cpp(20): error C2143: syntax error : missing ';' before '<'
1>c:\users\documents\visual studio 2010\projects\scenarioanalyzer\scenarioanalyzer\main.cpp(20): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
1>c:\users\documents\visual studio 2010\projects\scenarioanalyzer\scenarioanalyzer\main.cpp(22): error C2065: 'Graph' : undeclared identifier
1>c:\users\documents\visual studio 2010\projects\scenarioanalyzer\scenarioanalyzer\main.cpp(22): error C2146: syntax error : missing ';' before identifier 'G'
1>c:\users\documents\visual studio 2010\projects\scenarioanalyzer\scenarioanalyzer\main.cpp(22): error C2065: 'G' : undeclared identifier
1>c:\users\documents\visual studio 2010\projects\scenarioanalyzer\scenarioanalyzer\main.cpp(23): error C2065: 'G' : undeclared identifier
1>c:\users\documents\visual studio 2010\projects\scenarioanalyzer\scenarioanalyzer\main.cpp(23): error C3861: 'add_edge': identifier not found
1>c:\users\documents\visual studio 2010\projects\scenarioanalyzer\scenarioanalyzer\main.cpp(24): error C2065: 'G' : undeclared identifier
1>c:\users\documents\visual studio 2010\projects\scenarioanalyzer\scenarioanalyzer\main.cpp(24): error C3861: 'add_edge': identifier not found
1>c:\users\documents\visual studio 2010\projects\scenarioanalyzer\scenarioanalyzer\main.cpp(25): error C2065: 'G' : undeclared identifier
1>c:\users\documents\visual studio 2010\projects\scenarioanalyzer\scenarioanalyzer\main.cpp(25): error C3861: 'add_edge': identifier not found
1>c:\users\documents\visual studio 2010\projects\scenarioanalyzer\scenarioanalyzer\main.cpp(26): error C2065: 'G' : undeclared identifier
1>c:\users\documents\visual studio 2010\projects\scenarioanalyzer\scenarioanalyzer\main.cpp(26): error C3861: 'add_edge': identifier not found
1>c:\users\documents\visual studio 2010\projects\scenarioanalyzer\scenarioanalyzer\main.cpp(28): error C2065: 'G' : undeclared identifier
1>c:\users\documents\visual studio 2010\projects\scenarioanalyzer\scenarioanalyzer\main.cpp(28): error C3861: 'num_vertices': identifier not found
1>c:\users\documents\visual studio 2010\projects\scenarioanalyzer\scenarioanalyzer\main.cpp(29): error C2065: 'G' : undeclared identifier
1>c:\users\documents\visual studio 2010\projects\scenarioanalyzer\scenarioanalyzer\main.cpp(29): error C3861: 'connected_components': identifier not found

这是我试图构建的代码示例：

#include <algorithm>
#include <utility>
#include <boost/config.hpp>
#include <boost/graph/adjacency_list.hpp>
#include <boost/graph/connected_components.hpp>

void main()
{
    typedef adjacency_list <vecS, vecS, undirectedS> Graph;

    Graph G;
    add_edge(0, 1, G);
    add_edge(1, 4, G);
    add_edge(4, 0, G);
    add_edge(2, 5, G);

    std::vector<int> component(num_vertices(G));
    int num = connected_components(G, &component[0]);

    std::vector<int>::size_type i;
    cout << "Total number of components: " << num << endl;
    for (i = 0; i != component.size(); ++i)
      cout << "Vertex " << i <<" is in component " << component[i] << endl;
    cout << endl;
}

我很乐意为您提供帮助，谢谢。

【问题讨论】：

你需要#include <vector>再试一次。
@RichardCritten 什么？
我在另一个文件中有#include （已经包含在主文件中）

标签： c++ visual-studio-2010 visual-studio boost

【解决方案1】：

您缺少几个 using 或命名空间声明。还缺少：#include <iostream>

我建议using namespace boost 和std:: 资格：

Live On Coliru

#include <algorithm>
#include <utility>
#include <boost/config.hpp>
#include <boost/graph/adjacency_list.hpp>
#include <boost/graph/connected_components.hpp>
#include <iostream>

using namespace boost;

int main()
{
    typedef adjacency_list <vecS, vecS, undirectedS> Graph;

    Graph G;
    add_edge(0, 1, G);
    add_edge(1, 4, G);
    add_edge(4, 0, G);
    add_edge(2, 5, G);

    std::vector<int> component(num_vertices(G));
    int num = connected_components(G, &component[0]);

    std::vector<int>::size_type i;
    std::cout << "Total number of components: " << num << std::endl;
    for (i = 0; i != component.size(); ++i)
        std::cout << "Vertex " << i <<" is in component " << component[i] << std::endl;
    std::cout << std::endl;
}

【讨论】：