Implementation Of Prim's Algorithm In C Programming Code Example


Example: c program for prims algorithm

#include<stdio.h> #include<conio.h> int a,b,u,v,n,i,j,ne=1; int visited[10]= {	0},min,mincost=0,cost[10][10]; void main() {	 clrscr();	 printf("\n Enter the number of nodes:");	 scanf("%d",&n);	 printf("\n Enter the adjacency matrix:\n");	 for (i=1;i<=n;i++)	       for (j=1;j<=n;j++) {		       scanf("%d",&cost[i][j]);		       if(cost[i][j]==0)		           cost[i][j]=999;	       }	     visited[1]=1;	     printf("\n");	     while(ne<n) {		       for (i=1,min=999;i<=n;i++)		           for (j=1;j<=n;j++)		               if(cost[i][j]<min)		                if(visited[i]!=0) {			           min=cost[i][j];			           a=u=i;			           b=v=j;		           }		           if(visited[u]==0 || visited[v]==0)            {			             printf("\n Edge %d:(%d %d) cost:%d",ne++,a,b,min);             mincost+=min;			             visited[b]=1;		             }		           cost[a][b]=cost[b][a]=999;	           }	           printf("\n Minimun cost=%d",mincost);           getch(); }

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