Answer Posted / hardik

To Print data in binary tree..a recursive function should be
used here post for postorder, in for inorder & pre for
rpeorder...


void post(struct node *temp)
{
if(temp->lptr!=NULL)
post(temp->lptr);
if(temp->rptr!=NULL)
post(temp->rptr);
if(temp!=NULL)
printf("%d\t%s\t%d\n",temp->rollno,temp->name,temp->marks);
}

void pre(struct node *temp)
{
if(temp!=NULL)
printf("%d\t%s\t%d\n",temp->rollno,temp->name,temp->marks);
if(temp->lptr!=NULL)
pre(temp->lptr);
if(temp->rptr!=NULL)
pre(temp->rptr);
}

void in(struct node *temp)
{
if(temp->lptr!=NULL)
in(temp->lptr);
if(temp!=NULL)
printf("%d\t%s\t%d\n",temp->rollno,temp->name,temp->marks);
if(temp->rptr!=NULL)
in(temp->rptr);
}

2) Write a program that will help Air Traffic Control for an airport to view the sequence of flights ready for take-off. The airport can accommodate 10 flights waiting for take-off at any point in time. Each flight has a unique 3 digit numeric identifier.  Each time a flight takes-off, Air Traffic Control adds a flight to the waitlist. Each time a flight is added to the waitlist, the list of flights waiting to take-off must be displayed.  When a flight is cleared for take-off, Air Traffic Control removes the flight from the waitlist. Each time a flight takes-off, the list of flights waiting to take-off must be displayed.  Sequence of take-off is the sequence of addition to the waitlist

2925

---

how do you programme Carrier Sense Multiple Access

1969

---

How can I use a preprocessorif expression to ?

1065

---

any C program contains only one function, it must be a) void () b) main () c) message () d) abc ()

1123

---

How can I recover the file name given an open stream or file descriptor?

1082

---

How can I prevent another program from modifying part of a file that I am modifying?

1061

---

code for replace tabs with equivalent number of blanks

2167

---

Why c is a mother language?

1040

---

What is the use of the function in c?

1019

---

Mention four important string handling functions in c languages .

1115

---

difference between native and cross compilers

2130

---

What does *p++ do?

1025

---

What is the incorrect operator form following list(== , <> , >= , <=) and what is the reason for the answer?

1473

---

What is c language in simple words?

1068

---

Do you know the use of 'auto' keyword?

1204

---