1. String copy									25
Write a function that return a copy of the given string. The prototype of 
the function would be
	char *strcopy(char *src)
Take care of the trailing '\0' character.

2. Flights option								50
Write a program which takes a time of day, t, from the user, 
queries a known flight databse to output 2 flights with departure times 
closest to the time provided by the user - one flight departing just 
before time t and other one just after t. Each flight has a flight number 
and there are at most 10 flights. That is flight nos range from 0-9.
The departure and arrival times are stored in two separate int arrays - 
dep[] and arr[], such that flight with flight no. i has departure and 
arrival time stored at dep[i] and arr[i] respectively. Use the number 
of minutes elapsed since midnight as the measure of time. For e.g. if user
inputs the time 15:45, then the program should treat it as 
15*60+45 = 945mins. The flight times should also to be stored in this 
format. The code should print the arrival and departure times of the two 
flights in 24hr clock format alongwith their flight nos in separate lines.
The prototype of the function should be
	void getFlights(int time, int *dep, int *arr)

Output is printed in this function itself.

Sample Input/Output for a 5 flight database:
dep[] = {540, 720, 1050, 1260, 930} and 
arr[] = {660, 870, 1200, 1410, 1080}.
(flight 1 takes 2hrs, flight 2 takes 2.5hrs and so on)

If the user inputs the time 15:45, the output shall be
	flight 4 dep-15:30 arr-18:00
	flight 2 dep-17:30 arr-20:00
	
3. Removal of duplicates           25
Write a program that takes an integer array a of size 15 from the user as
input. The array may have multiple occurrences of elements. You have to 
remove the multiple occurences of elements and store the distinct elements 
in a new array. Use pointers to traverse the array elements in both the 
arrays.

For example,
if array a: 3 4 5 1 4 5 2 4 6 4 2 5 6 3 5
then the new array: 3 4 5 1 2 6