README.md

Library for graph properties in C++

There are many graph properties. but here we provided a library in C++(graphProperty.CPP) that provides few properties of graphs. To execute these functionality, one need to include the header file graphProperty.h. We provided an example.cpp which shows how these properies can be executed.

Usage

We have used the boost libraries for graph generation. See https://cs.brown.edu/~jwicks/boost/libs/graph/doc/quick_tour.html for more detailed documentation.

#include<bits/stdc++.h>
#include<boost/config.hpp>
#include<boost/graph/adjacency_list.hpp>
#include<boost/graph/erdos_renyi_generator.hpp>
#include<boost/random/linear_congruential.hpp>
#include<boost/graph/isomorphism.hpp>
#include<boost/graph/graph_utility.hpp>
#include<boost/graph/connected_components.hpp>
#include<boost/graph/graphviz.hpp>
#include <boost/graph/copy.hpp>
#include "graphProperty.h"
using namespace std;
 
int main()
{
   Graph g;
 
    boost::add_edge (0, 1, {0,0}, g);
    boost::add_edge (1, 3, {0,0}, g);
    boost::add_edge (1, 2, {0,0}, g);
    boost::add_edge (2, 3, {0,0}, g);
    boost::add_edge (3, 1, {0,0}, g);
    boost::add_edge (3, 2, {0,0}, g);
    boost::add_edge (1, 4, {0,0}, g);
    boost::add_edge (4, 5, {0,0}, g);
    boost::add_edge (2, 5, {0,0}, g);
 
    auto epair=edges(g);
    for(auto itr=epair.first;itr!=epair.second;itr++)
    {
      cout<<source(*itr,g)<<" -> "<<target(*itr,g)<<" ";
      cout<<endl;
    } 
    
    cout<<boolalpha;
    cout<<"There is path from vertex 0 to 3: "<<isPath(0,3,6,g);
    cout<<endl;
    cout<<"There is an edge from vertex 2 to 5: "<<isEdge(2,5,g);
    cout<<endl;
    cout<<"There is an edge from vertex 4 to 3: "<<isEdge(4,3,g);
    cout<<endl;
    cout<<"The graph is connected: "<<isConnected(g);
    cout<<endl;
    cout<<"The graphs contains two edges between the same vertex (in forward and backward direction): "<<loopEdgeExist(g);
    cout<<endl;
    
    return 0;
 }

Creating Shared Library

# Getting the object file
g++ -fPIC -c -std=c++11 graphProperty.cpp

# Creating the shared .SO library
gcc -shared -o libgraphProperty.so graphProperty.o

Using the shared library for an example code

# Create the executable by linking shared library
g++ -L/home/ravi/Project/lib/ -Wall -std=c++11 example.cpp -lgraphProperty    #here /home/ravi/Project/lib/ is path to .SO file

# Make shared library available at runtime
export LD_LIBRARY_PATH=lib/:$LD_LIBRARY_PATH

#  Run executable
./a.out