Mohan Lal Sukhadia University (MLSU) 2001 COMPUTER SCIENCE - -I (Operating System & Fundamentals of 'C' Programming) - Question Paper

Third Year exam of the
Three -Year Degree Course, 2001
(Faculty of Science)
COMPUTER SCIENCE
Paper-I
(Operating System & Fundamentals of 'C' Programming)
Time : three Hours
[ Maximum Marks :50 ]
Attempt 5 ques. in all.
selecting at lowest 1 ques. from every unit ,
All ques. carry equal marks.

UNIT-I
1. (a) What do you understand by Software? provide the classification
of Software.
(b) Draw a block diagram of the phases of a compiler and indicate
main function of every phase.

2. (a) discuss contiguous allocation method.
(b) elaborate the major activities of an operating system in situation
to the file management?

UNIT-II

3. (a) elaborate the main advantages of multiprogramming
(b) discuss the features of UNIX Operating System.

4. (a) explain the evolution of MS-DOS
(b) Distinguish ranging from external and internal commands.
(c) define how MS-DOS hierarchical file system is organized.

UNIT-III

5. (a) explain that 'C' is relatively a low level language.
(b) explain the main features of the 'C' programming language.

6.(a) provide a five digit integer. Write a 'C' program to print it in reverse
order (for example provided 92345 the outcome should be 54329).
(b) Write function to add, subtract, multiply and divide the two
complex number (x+iy) and (a+ib).

UNIT-IV

7. Write a function to validate the elements of a matrix of size n x n.
The validation rules are :
(i) All diagonal entries should be positive.
(ii) The matrix should be symmetric
(iii) All the non-diagonal elements should be negative or zero.

8. Write a recursive function in 'C' to obtain Greatest Common Division
(GCD) of 2 positive integers and hence discuss the process of
recursion.

UNIT-V

9. Write function in 'C' to retrieve a record with specified key using files.

10. Create a structure to store employee's data with the subsequent information:-
Employees No, Employees name, employee pay, date of joining
(which is itself a structure)
It is decided to increase the pay as per the subsequent rules :-
pay<=Rs. 2,000 15% increase
pay>=Rs. 5,000 but >2,000 10% increase
pay>5,000 no increase
Write 'C' program to print details of employees who have completed
20 years of service.

Earning:   Approval pending.