Prime Algorithm
#include<stdio.h>
int a,b,u,v,n,i,j,ne=1;
int visited[10]= {0},min,mincost=0,cost[10][10];
int main()
{
//clrscr();
printf("\nEnter the number of nodes:");
scanf("%d",&n);
printf("\nEnter 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;
printf("i=%d j=%d cost=%d\n",i,j,cost[i][j]);
}
visited[1]=1;
printf("\n");
while(ne < n)
{
for(i=1,min=999; i<=n; i++)
{
for(j=1; j<=n; j++)
{
printf("iiii=%d jjjj=%d cost=%d\n",i,j,cost[i][j]);
printf("%d\n",min);
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("------------------------");
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);
}
/*
0
3
2
3
1
2
1
0
*/
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