# Bfs algorithm in c

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**BFS**starts from the source node.

**BFS**first visits all nodes at distance 1 from the starting node. Then all nodes at distance 2. Then all nodes at distance 3, etc. So,

**BFS**finds the shortest path (in terms of number of edges) to a goal node, because the shortest path, definitionally, is the least-distance path. Breadth First Search - Code. Connected Component 1: {a,b,

**c**,d,e} Connected Component 2: {f}

**BFS**is a graph traversal

**algorithm**. So starting from a random source node, if on termination of

**algorithm**, all nodes are visited, then the graph is connected,otherwise it is not connected. PseudoCode for the

**algorithm**. boolean isConnected(Graph g) {

**BFS**(v)//v is a random source node.

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- In this note I will explain you one of the most widely used Graph Search
**Algorithms**, the**Breadth First Search**(**BFS**). Once you have learned this, you have gained a new weapon in your arsenal..! You can start solving good number of Graph Theory related competitive programming questions. Not only that, but**BFS**has many applications in the real ... - The following theorem by
**C**. Berge is essential for the**algorithm**: A matching M is not maximum iff there exists an augmenting path in G. Thus, if we cannot find an augmenting path in G anymore, the resulting matching must be maximum. ... In addition to the**BFS**, we have to perform at most n contractions (and thus at most n expansions). A single ... - For the
**BFS****algorithm**, the steps below are executed. In a given graph, let us start from a vertex, i.e. in the above diagram, it is node 0. The level in which this vertex is present can be denoted as Layer 0. The next step is to find all the other vertices that are adjacent to the starting vertex, i.e. node 0 or immediately accessible from it. - The steps involved in the BFS algorithm to explore a graph are given as follows - Step 1: SET STATUS = 1 (ready state) for each node in G Step 2: Enqueue the starting node A and set its STATUS = 2 (waiting state)
- Your bfs is working fine, as people have pointed out, your
**isEmpty () function for the queue has a flaw.**It should be checking for 2 conditions, No elements have been enqueued or dequeued till now. For that the condition is (queue->front==-1 && queue->rear==-1)