write a program that will find the shortest path from a given vertex to a given vertex. Your program must allow the user to enter any start vertex and any destination vertex and output the shortest path.
C++ code for above problem
#include<iostream>
using namespace std;
#define V 6
#define MAX 9999999
void floyd_warshall(int graph[][V],int distances[][V])
{
for(int i=0;i<V;i++)
{
for(int
j=0;j<V;j++)
{
distances[i][j]=graph[i][j];
if(i!=j
&& distances[i][j]==0)
{
distances[i][j]=MAX;
}
}
}
for(int k=0;k<V;k++)
{
for(int
i=0;i<V;i++)
{
for(int
j=0;j<V;j++)
{
distances[i][j]=min(distances[i][j],distances[i][k]+distances[k][j]);
}
}
}
}
int main()
{
int graph[V][V]={{0,1,0,0,1,0},
{1,0,1,0,0,1},
{0,1,0,1,0,0},
{0,0,1,0,1,0},
{1,0,0,1,0,1},
{0,1,0,0,1,0},
};
int distances[V][V];
floyd_warshall(graph,distances);
char src,dest;
cout << "Enter source vertex: ";
cin >> src;
cout << "Enter destination vertex: ";
cin >> dest;
cout << "Distance from " << src << "
to " << dest << ": " <<
distances[src-'A'][dest-'A'] << endl;
return 0;
}
Sample output
Mention in comments if any mistakes or errors are found. Thank you.
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