How can I create a graph application in C++?

How can I create a graph application in C++?

To create a graph application in C++, you can use libraries like Graphviz or implement your own data structures.

What data structures should I use for the graph?

You can use adjacency lists or adjacency matrices to represent the graph. Adjacency lists are more space-efficient.

Can you give me a simple code example?

Sure! Here's a basic example using an adjacency list:

#include <iostream>
#include <vector>

class Graph {
public:
    std::vector<std::vector<int>> adj;
    Graph(int V) { adj.resize(V); }
    void addEdge(int v, int w) { adj[v].push_back(w); }
};

How do I visualize the graph?

You can use Graphviz to visualize the graph. You can export your graph data to a DOT file and then use Graphviz to generate images.