LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.A. DEGREE EXAMINATION – APRIL 2006

AC 56

SIXTH SEMESTER – APRIL 2006

                                  S 672 – COMPUTER APPLICATIONS FOR ECONOMISTS

 

 

 

Date & Time : 02-05-2006/1.00–4.00 P.M.      Dept. No.                                                        Max. : 100 Marks

 

 

SECTION A

Answer ALL questions                                                                              [10×2 =20]

1. What does the acronym ‘ BASIC’ stand for?
2. Define Source Program and give an example
3. Draw a flowchart to find the area of a square
4. Convert the following binary number to decimal : 1010
5. Write the binary equivalent of the decimal number : 1010
6. Define user defined function and give an example
7. Give the output : 10 LET X= 2^5+5^2

20 PRINT X

8.State the advantages of ARRAY and give an example for  one-dimensional array

9. What is the use of LEN( ) function?
10. Define RECORD in data file and give an example

 

SECTION B

 Answer any FIVE questions                                                                  [5×8 =40]

11. Distinguish between READ…DATA and INPUT statements.
12. Write a program to find the biggest of three numbers A, B and C
13. Write a BASIC program to find mean of n numbers.
14. Explain different relational operators with illustration
15. Write a BASIC program to find the sum of digits of the number N.
16. Explain the different formats of PRINT statement
17. Explain any TWO string-handling functions with the syntax and examples
18. Write a short note on a] data file creation b] Data retrieval

 

SECTION C

Answer any TWO questions                                                                         [2 x 20 =40]

19. The sales turnover of 50 sales persons are stored in the array SALES[50] and their IDs are stored in another array viz. EMPID[50]. Write a BASIC program which identifies the maximum-sales. Also, Identify the employee one who made maximum-sales.
20. Write a program in BASIC to determine the roots  of a quadratic equation.
21. Explain the following control statements with appropriate syntax and illustration

a] IF …THEN …ELSE        b] FOR …NEXT                               [10+10]

22. A leading supermarket in Chennai has two branches. The weekly(6-workdays)

sales(in Rs. Lakhs)  of each of the two braches on 20 products are stored in the

tables BRANCH1[6,20] and BRANCH2[6,20] respectively. Write an appropriate

BASIC program which computes the sum of the weekly sales product-wise.

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