Question

#include <iostream>

using namespace std;

typedef int vertex;

enum vertexstate { white, gray, black };

class graph
{
private: 
        bool**adjacencymatrix;
        int vertexcount;
public: 
        graph(int vertexcount);
        ~graph();

        void addedge(int i, int j);
        void removeedge(int i, int j);
        bool isedge(int i, int j);

        void display();
        void Dfs();
        void runDfs(int u, vertexstate state[]);
};

graph::graph(char filename[], int vertexcount)  //error is here
{
    this->vertexcount = vertexcount;
    adjacencymatrix = new bool*[vertexcount];

    for (int i = 0; i<vertexcount; i++)
    {
        adjacencymatrix[i] = new bool[vertexcount];
        for (int j = 0; j<vertexcount; j++)
            adjacencymatrix[i][j] = false;
    }

Answer 1

除了您的代码示例不完整而且您并未真正制定问题....

您的构造函数定义为graph(int vertexcount);但您的实现使用了不同的参数：graph(char filename[], int vertexcount)。

根据您的目标，您有两种可能性：

1）您可以将班级中的定义更改为graph(char filename[], int vertexcount)

2）您可以将实施更改为：＃

graph::graph(int vertexcount)
{
    this->vertexcount = vertexcount;
    adjacencymatrix = new bool*[vertexcount];

    for (int i = 0; i<vertexcount; i++)
    {
        adjacencymatrix[i] = new bool[vertexcount];
        for (int j = 0; j<vertexcount; j++)
            adjacencymatrix[i][j] = false;
    }
}

如果您需要文件名：我建议您使用const std::string&作为参数类型 - 或者至少const char* ...

如何修复：＆＃34;＆＃39;图表＆＃39;不匹配＆＃39;图表中的任何声明＆＃34;＆＃34;

1 个答案: