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for(i=1;i<=n;i++) vis[i]=0;

printf("ENTER THE SOURCE VERTEX :"); scanf("%d",&s);

dfs(s,n);

}

void push(int item)

{

if(top=19) printf("Stack overflow "); else stack[++top]=item;

}

2

}

int pop()

{

int k;

if(top-1)

return(0);

else

{ k=stack[top--]; return(k);

}

void dfs(int s,int n)

{

int i,k;

push(s);

vis[s]=1;

k=pop();

if(k!=0)
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