Answer Posted / prakashkumarng

#include<stdio.h>
#include<conio.h>
#include<malloc.h>
typedef struct linkedlist
{
int data;
struct linkedlist *left,*right;
}node;
node *makenode(int);
void setleft(node *,int);
void setright(node *,int);
void preorder(node *);
void postorder(node *);
void inorder(node *);
int depth(node *,int);
node *q,*k;
int l=0,d=1;
void main()
{
node *root,*p,*q;
int x,f;
clrscr();
printf("\nEnter the root :");
scanf("%d",&x);
root=makenode(x);
printf("\nEnter the data(-1 to stop) :");
scanf("%d",&x);
while(x!=-1)
{
p=root;
while(p!=NULL)
{
q=p;
if(x<p->data)
{
p=p->left;
}
else
{
p=p->right;
}
}
if(x<q->data)
{
setleft(q,x);
}
else
{
setright(q,x);
}
printf("\nEnter the data(-1 to stop) :");
scanf("%d",&x);
}
printf("\nPreorder traversal is \n");
preorder(root);
printf("\nPostorder traversal is \n");
postorder(root);
printf("\nInorder traversal is \n");
inorder(root);
printf("\nDepth of the tree is \n");
f=depth(root,l);
printf("%d",f+1);
getch();
}
node *makenode(int x)
{
node * temp;
temp=(node *)malloc(sizeof(node));
temp->data=x;
temp->left=NULL;
temp->right=NULL;
return(temp);
}
void setleft(node *p,int x)
{
node *temp;
if(p==NULL)
{
printf("Error");
}
temp=makenode(x);
p->left=temp;
}
void setright(node *p,int x)
{
node *temp;
if(p==NULL)
{
printf("Error");
}
temp=makenode(x);
p->right=temp;
}
void inorder(node *p)
{
if(p!=NULL)
{
inorder(p->left);
printf("%d\t",p->data);
inorder(p->right);
}
}
void postorder(node *p)
{
if(p!=NULL)
{
postorder(p->left);
postorder(p->right);
printf("%d\t",p->data);
}
}
void preorder(node *p)
{
if(p!=NULL)
{
printf("%d\t",p->data);
preorder(p->left);
preorder(p->right);
}
}
int depth(node *p,int l)
{
if(p!=NULL)
{
if(l>d)
d=l;
depth(p->left,l+1);
depth(p->right,l+1);
}
return d;
}

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