C Program for Creating Minimum Spanning Tree using Prim’s Algorithm

By | 11.07.2017

Minimum Spanning Tree using Prim’s Algorithm

Write a C Program for Creating Minimum Spanning Tree using Prim’s Algorithm. Here’s simple Program for minimum cost spanning tree using prim’s algorithm example in C Programming Language.

Prim’s Algorithm


Prim’s algorithm is a greedy algorithm that finds a minimum spanning tree for a connected weighted undirected graph.

It finds a subset of the edges that forms a tree that includes every vertex, where the total weight of all the edges in the tree is minimized.

This algorithm is directly based on the MST( minimum spanning tree) property.

How does Prim’s Algorithm Work?   The idea behind Prim’s algorithm is simple, a spanning tree means all vertices must be connected. So the two disjoint subsets of vertices must be connected to make a Spanning Tree. And they must be connected with the minimum weight edge to make it a Minimum Spanning Tree.

The steps for implementing Prim’s algorithm are as follows:

  1. Initialize the minimum spanning tree with a vertex chosen at random.
  2. Find all the edges that connect the tree to new vertices, find the minimum and add it to the tree
  3. Keep repeating step 2 until we get a minimum spanning tree

Also Read : : C Program to find Shortest Path Matrix by Modified Warshall’s Algorithm

Below is the source code for C Program for Creating Minimum Spanning Tree using Prim’s Algorithm which is successfully compiled and run on Windows System to produce desired output as shown below :



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