By: Prem Tiwari | Last Updated: | In: C Programming Tutorial
Here is a c program to describe the DFS (Depth First Search). Depth First Search is an algorithm which is used to search a Tree or Graph in the programming language. It starts from the Root node and then starts traversing to the next level of Tree and Graph.
Copy the below program and execute it with the help of turbo c or TC bin to see the output.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 | #include<stdio.h> void DFS(int); int G[10][10],visited[10],n; void main() { int i,j; printf("Enter number of vertices:"); scanf("%d",&n); //read the adjecency matrix printf("\nEnter adjecency matrix of the graph:"); for(i=0;i<n;i++) for(j=0;j<n;j++) scanf("%d",&G[i][j]); //visited is initialized to zero for(i=0;i<n;i++) visited[i]=0; DFS(0); } void DFS(int i) { int j; printf("\n%d",i); visited[i]=1; for(j=0;j<n;j++) if(!visited[j]&&G[i][j]==1) DFS(j); } |
Enter number of vertices:2
Enter adjecency matrix of the graph:12
14
12
5
0
Prem Tiwari is the founder of FreeWebMentor.com and also a professional developer who has vast experience in PHP and open source technologies. Apart from this, he is a blogger by hobby and also he has been a regular speaker of WordPress sessions in various IT Companies. View all posts by Prem Tiwari
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