B.Tech. (I) - ICP-132 (2009)
				Assignment 8

Level 0
-------

Implement all the examples for exception handling given in Balaguruswamy.


Level 1
-------

1. Given the following class, write a program to construct and use class 
'line' with method to find distance. Class line should also find the 
slope, but the slope should not be accessible to user (ie, should not be 
public)! You can have your own data members and methods under private, 
protected and other placed as indicated below, but the public members 
cannot be increased.

	class line <fill anything here that may be necessary> {
		private:
			<fill anything here that may be necessary>
		protected:
			<fill anything here that may be necessary>
		public:
			int x;
			int y;
			int dist()
			{
				<fill anything here that may be necessary>
			}
	};

2. Conisder the class 'movie' given below as a base class. Use it to 
construct two derived classes, 'bollywood' and 'hollywood'. Each has a 
data member 'certificate'. The values that can be accepted for 
certificate are 'U', 'U/A' and 'A' for bollywood and 'G', 'PG' and 
'PG-13' for hollywood. User should be able to assign any of the above 
ceritificate to a movie but nothing else. If no valid certificate is 
available 'N/A' is to be the default value. Write a program that uses 
such classes.

3. Create the base class 'country' and derived classes 'monarchy' and 
'democracy' with the following restrictions:

	class country {
		public:
			int population;
			int area;
			int no_of_states;
	};

	class monarchy <fill anything here that may be necessary> {
		public:
			string king;
			string queen;
			string minister;
	};

	class democracy <fill anything here that may be necessary> {
		public:
			string president;
			string vice_president;
			string prime_minister;
	};

Show how to use these to access all the members of the derived classes.


Level 2
-------

1. Create a derived class ind_mov that uses both democracy class and 
bollywood class. Show how to use it to get various information about 
India and its movies.

2. Create a derived class 'y_intercept' using class 'line' as a base 
class and the slope available in the 'line'. Given the two points, 
create a public method 'c' that returns the y-intercept.

3. Create two classes 'read' and 'copy' as shown below. Use them to open 
a given file name and copy it to another file. The file names are given 
by the user. Class 'copy' must inherit 'read' to complete its task. Is 
it necessary that 'read' class needs to be inherited to do the job even 
if it is mandatory to use 'read'?

	class read {
		private:
			<fill anything here that may be necessary>
		protected:
			<fill anything here that may be necessary>
		public:
			string ip_file;
			void read_file(string fname) {
				<fill anything here that may be necessary>
			}
	};

	class copy : <fill anything here that may be necessary> {
		private:
			<fill anything here that may be necessary>
		protected:
			<fill anything here that may be necessary>
		public:
			string ip_file;
			void copy_file(string fname) {
				<fill anything here that may be necessary>
			}
	};

4. Create class 'two_lines' using class 'line'. It should have a bool 
returning method 'if_intersect' that returns true if the two lines 
intersect and false otherwise.

5. Inheriting the class copy, create a class 'file_class' that can be 
used to create, append and overwrite files.

6. Create a class 'state' which have list of states in a country along 
with the information on the state capitol and population. Create a class 
from this called 'country' that holds the information about states of 
various countries.