Wednesday, February 20, 2019

write a qbasic program to convert binary number to octal equivalent number

write a qbasic program to convert binary number to octal equivalent number

CLS
INPUT "enter binary number"; n#
WHILE n# <> 0
    r = n# MOD 10
    s = s + r * 2 ^ i
    i = i + 1
    n# = n# \ 10
WEND
i = 1
WHILE s <> 0
    r1 = s MOD 8
    d = d + r1 * i
    s = s \ 8
    i = i * 10
WEND
PRINT "Octal equivalent number="; d
END

Solved SLC Examination-2065(2009)

Solved SLC Computer Science 2065

SLC Examination-2065(2009)
Computer Fundamental (22 marks)
  1. Answer the following questions:

  2. Define star topology with figure.
Ans: The topology in which all computers or the network devices are connected through a central device in the shape of star structure is called star topology.
Diagram of star topology
  1. List out any four services of internet.
Ans: Any four services of internet are
  1. i) E-mail (Electronic mail)
    ii) FTP (File Transfer Protocol)
    iii) IRC (internet Relay Chat)
    iv) E-commerce

  2. Define computer ethics.
Ans: Computer ethics is the set of moral principles or code of conducts that should be followed by computer user.

  1. Write down two measures of each to protect computer hardware and software.
Ans: Any two hardware security measures are:
  1. ii) Insurance Policy
    ii) Power Regulator Device
Any two software security measures are:
i) Backup
iv) Password

  1. What is anti-virus? Write down any two examples of anti-virus software.
    Ans: Antivirus software is software designed to detect and remove virus from computer system to ensure virus free environment.
Any two examples of antivirus software are:
i) Kaspersky    ii) NOD32
  1. Match the following:
    Group A            Group B
    a) Server                      i) HTTP
    b) Node                                   ii) Work station
    c) Protocol                   iii) Main computer
    d) Coaxial cable           iv)Repeater
    v) Communication Media
Answers
Group A                      Group B
a) Server                      Main computer
b) Node                                   Work stationc) Protocol                   HTTPd) Coaxial cable           Communication Media

  1. Select the best answer:
    a)Which refers to the communication media?
    i) UTP cable ii) Fiber optic cable      iii) Satellite       iv) All of the above
All of the above
  1. b) Which is the correct Email ID?
    i) Yahoo@rameshii) Ramesh@yahoo.com          iii) @ramesh.yahoo.com          iv) None of the above
Ramesh@yahoo.com

  1. c) Route of virus transmission:
    i) Pen driveii) Microphone             iii) Printer                     iv) Mouse
Pen drive
  1. d) Main component of multimedia is:
    i) Floppy disk            ii) Floppy drive                        iii) Sound card             iv) Magnetic tape
Sound card

5) Give appropriate technical terms:

a) A computer network limited within a room.
LAN (Local Area Network)
  1. b) A program that destroys other program
Computer Virus
  1. c) Law regarding internet (or Legal issues of Cyber Space).
Cyber Law
  1. d) Buying and selling products and services online.
E-Commerce
  1. Write the full forms:
  2. a) UPS= Uninterruptible Power Supply
  3. b) TCP =          Transmission Control Protocol
  4. c) STP=          Shielded Twisted Pair
  5. d) NIC= Network Interface Card
Group B-  Database (10 marks)
  1. Answer the following question:
    a) What is database?
Ans:Database is a collection of related and organized information that can be used for different purpose.

  1. b) While designing table structure which data types are suitable to store information about teacher’s name, address, salary, and date of birth.
While designing table structure the data types are suitable to store information about
teacher’s name = Text
Address = Memo
Salary = currency
Date of birth = Date / Time

  1. c) Write down any two advantages of Query.
Any two importance of query are:
  1. It allows user to make calculations and change data in automated fashion.
  2. It provides option to delete all the unwanted data matching certain criteria.
  1. Select the best answer:
    a) …………… is not the data type of MS-Access.
    i) Numberii) Text             iii) Memo         iv) Form
Form
  1. b) …………… is the DBMS.
    i) Fox-Proii) MS-Excel                 iii) Lotus-123   iv) All of the above
Fox-pro
  1. c) Primary key does not accept ……………
    i) Text             ii) Number       iii) Null value   iv) None of the above
Null value
  1. d) In MS-Access we enter data using ………….
    i) Form ii) Table           iii) Report        iv) Both (i) &(ii)
Both (i) &(ii)
  1. Match the following:
    Group AGroup B
    a) Query                      i)Printed format
    b) Form                                    ii) Stored data
    c) Table                       iii) Allows view, edit, input data
    d) Report                     iv) Extracts the selected record for view
    v) DBMS
Answers
Group A                      Group B
a) Query                      Extracts the selected record for view
b) Form                                    Allows view, edit, input data
c) Table                       Stores data
d) Report                     Printed format
           
Group C-Programming (18 marks)
  1. a) Write down one difference between function and sub procedure.
Ans: One difference between function and sub procedure is
SUB-procedureFUNCTION-procedure
SUB-procedure does not return value.FUNCTION-procedure must return a value.
  1. b) List any two data type used in C language.
Ans: Any two data type used in C language are char and int

  1. c) Write down the functions of:
    i) RMDIR       
Ans: It is used to remove or delete only the subdirectories from a disk. It can remove only empty subdirectories.
  1. ii) NAME
Ans: The NAME statement renames a file on a disk.
11.Write the output of:
DECLARE SUB RESULT(A$)
A$ = “EDUCATION”
CALL RESULT(A$)
END
SUB RESULT (A$)
FOR C = 1 TO LEN(A$) STEP 2
X$ = MID$(A$, C, 1)
PRINT X$
NEXT C
END SUB
  1. Re-write the following program after correcting:DECLARE FUNCTION SUM(a,b)
    REM Program to sum given two numbers
    Input ”Enter first number”; x
    Input “Enter second number; y
    PRINT SUM(a,b)
    END
    FUNCTION SUM(x,y)
    SUM=a+b
    END
Debuged Program
DECLARE FUNCTION SUM (a,b)
REM Program to sum given two numbers
Input ”Enter first number”; x
Input “Enter second number; y
PRINT SUM (x, y)
END
FUNCTION SUM(a, b)
SUM=a+b
END FUNCTION
  1. Study the following program and answer the following question:
    DECLARE FUNCTION xyz(N)
    FOR I = 1 TO 5
    READ N
    Z=xyz(N)
    S=S+Z
    NEXT I
    PRINT S
    DATA 10,13,15,4,6
    END
    FUNCTION xyz(N)
    IF N MOD 2=0 THEN xyz=N
    END FUNCTION
    a) What is the name of the function used in the above program?
Ans: The name of the function used in the above program is xyz.
  1. b) How many times the function will be called in the above program?
Ans: The function will be called five times in the above program.
  1. a) Write a program to store records regarding the information of Book number, Book’s name and Writer’s name in a sequential data file called “Library.dat”.
OPEN “Library.dat” FOR OUTPUT AS #1
DO
CLS
INPUT “ENTER BOOK’S NUMBER”; BN
INPUT “ENTER BOOK’S NAME”; B$
INPUT “ENTER WRITER’S NAME”; N$
WRITE #1, BN, B$, N$
INPUT “DO YOU WANT TO CONTINUE”; CH$
LOOP WHILE UCASE$(CH$) = “Y”
CLOSE #1
END
  1. b) Using FUNCTION……END FUNCTION, write a program to calculate distance travelled by a body. (Hint: s=ut+ (1/2) at2)

DECLARE FUNCTION DISTANCE (U,T, A)
CLS
INPUT “ENTER INITIAL VELOCITY, TIME AND ACCELERATION”; U, T, A
PRINT “DISTANCE TRAVELLED BY BODY”; DISTANCE (U, T, A)
END

FUNCTION DISTANCE (U, T, A)
DISTANCE = U*T+1/2*A*T^2
END FUNCTION

  1. c) Using SUB……….END sub, write a program to print the following serial 9, 7, 5,……1
           
            DECLARE SUB SERIES ( )
CLS
CALL SERIES
END
SUB SERIES ( )
FOR I = 9 TO 1 STEP-2
PRINT I
NEXT I
END SUB
***

Solved SLC Examination-2066(2010)

SLC Examination-2066(2010)
            Computer Fundamental (22 marks)
  1. Answer the following question:
    a) What is computer network?
Ans: computer network means two or more computers connected with each other to share data, hardware, software and other resources.
  1. b) What is internet?Ans: Internet is an interconnection of several thousands of computers of different types belonging to the various networks all over the world.
  1. c) Write any four preventive measures to protect computer system from virus infection.Ans: Any four preventive measures to protect computer system from virus infection are:
    i) Write protect your floppy disks when using them on other computers.
    ii) Scan the mail or unknown files of internet before opening in your computers.
    iii) Use a good antivirus program to scan floppy disk, CD, etc. before copying.
    iv) Don’t install pirated software, especially computer games.
  1. d) Write any two software used for multimedia.Ans: Any two software used for multimedia are:
  2. i) Windows Media Player
  3. ii) VLC Media Player
  1. e) What is hardware security?
 Ans: The security given to the various hardware tools or equipment from being lost or damaged due to accidental or intentional harm is hardware security.


  1. Match the following:
    Group AGroup B
    a) T-connector             i)Network
    b) Bridge                      ii) Power protection
    c) CD-ROM                 iii) Coaxial  cable
    d) Spike Guard                        iv)Multimedia component
    v)Virus scanning
    Answers
Group A                      Group B
a) T-connector             Coaxial  cable
b) Bridge                      Networkc) CD-ROM                 Multimedia componentd) Spike Guard                        Power protection
  1. Select the best answer:
    a) Which one is not a network topology?
    i) Starii) Ring             iii) Client / Server                     iv) Bus
Client/Server
  1. b) When was cyber law introduced in Nepal?
    i) 2061 B.S.ii) 2062 B.S.    iii) 2007 B.S.   iv) 2016 B.S.
2061 B.S.
  1. c) Multimedia technology is used in ………
    i) Educationii) Business      iii) Health care iv) All of the above
All of the above
  1. d) Boot sector virus infects ……..
    i) System fileii) Master boot record  iii) Application software          iv) Document file
                Master boot record
  2. Give appropriate technical terms:
    a) Rules and format to accept and transfer data in the computer network.
Protocol
b) Moral rules to be followed by computer and other professionals.
Computer ethics
c)  Making an extra copy of data and software.
Backup
d) A virus that corrupts system files of operating system.
File Infector virus
6. Write the full forms:
a)WWW           =          World Wide Web
b)MAN                        =          Metropolitan Area Network
c)OS                =          Operating System
d)NIC              =          Network Interface Card
Group B-Database (10 marks)
  1. Answer the following question:
  2. a) What is DBMS? Write any two examples of DBMS software.
Ans: DBMS is a software which is used to manage data, manipulate them and provide the information. Examples of DBMS are MS-Access and Oracle.
  1. b) List any four data types used in MS-Access.Ans: Any four data types used in Ms-Access are:
  2. i) Text
  3. ii) Memo
iii) Number
  1. iv) Yes/No
  1. c) What is form? Write any two advantages of using form.Ans: Form is an object of MS-Access which provides a user friendly interface to enter data in a table or multiple linked tables.
Any two advantages of using form are:
  1.             It helps to display data in more presentable form than a datasheet can.
  2.             It provides an interactive platform for input of data into the database.
  3. Select the best answer:
    a) Date/Time occupies ……….bytes of memory.
    i) 4                   ii) 2                  iii) 8                 iv) 16
8
  1. b) The extension of database file in MS-Access is……….
    i) DBFii) DBM           iii) MDB          iv)DMB
MDB
  1. c) The object of MS-Access that is used to generate hard copy of records.
    i) Queryii) Table           iii) Form           iv) Report
Report
  1. d) A ………….. Key uniquely identifies a record.
    i) Primaryii) Foreign        iii) Composite  iv) None
    Primary
  2. Match the following:
    Group AGroup B
    a) Default value                       i) 255 Characters
    b) Fox Pro                    ii) Column Name
    c) Text                         iii) DBMS
    d) Field                                    iv)Field Properties
    v) Search fast
Answers
Group A                      Group B
a) Default value                       Field Properties
b) Fox Pro                    DBMSc) Text                         255 Characters
d) Field                                    Column Name
Group C-Programming
  1. a) What is modular program?Modular program is a technique used to divide program into many small, manageable, logical and functional modules or blocks.
  2. b) Write any two advantages of Structured programming.Ans: Any two advantages of Structured programming
  3. i) It is a high level language with some features of low level language.
    ii) It is mostly used to prepare system software.
  4. c) Write the function of following statement:
  5. i) Files
Ans: The FILES statement displays the files of the current sub directory or specified sub directory.
  1. ii) KILL
    Ans: The KILL statement deletes the file or files from the specified drive and directory.
  2. Debug the given program:
    DECLARE SUB Fibonic()
    REM *Fibonic series*
    CALL SUB Fibonic
    END
    SUB Fibonic
    a=1
    b=1
    FOR x=1 to 10
    DISPLAY a;
    a=a+b
    b=a+b
    END Fibonic
Debugged  program
DECLARE SUB Fibonic( )
REM *Fibonic series*
CALL  FibonicEND
SUB Fibonic
a=1
b=1
FOR x=1 to 10
PRINT a;
a=a+b
b=a+b
NEXT x
END SUB
  1. Write the output of the following program.
    DECLARE SUB Series()
    CALL Series
    END
    SUB Series
    X=1
    Y=1
    FOR Z=1 TO 4
    PRINT X;
    Y=Y+1
    X=X*10+Y
    NEXT Z
    END SUB

  1. Read the given program and answer the following questions:
    DECLARE FUNCTION Num(N)
    INPUT N
    S=Num(N)
    PRINT S
    END
    FUNCTION Num(N)
    X=Int(17/N)
    Y=15 MOD N
    Num=X +Y
    END FUNCTION
  2. i) Write the name of the function used in the above program.
Ans: The name of the function used in the above program is Num.
  1. ii) List out the mathematical function (Library function) used in the above program.
Ans: The mathematical function (Library function) used in the above program is INT ( ).
14. i) Write a program using Function Module to calculate and print the volume of a box.
            DECLARE FUNCTION VOLUME(L, B, H)
CLS
INPUT “ENTER LENGTH, BREADTH AND HEIGHT”; L, B, H
PRINT “VOLUME OF BOX”; VOLUME(L, B, H)
END
FUNCTION VOLUME (L, B, H)
VOLUME = L*B*H
END FUNCTION

  1. ii) Write a program to declare SUB procedure to print only the vowels from a given word.
DECLARE SUB DISPV (S$)
CLS
INPUT “ENTER ANY WORD”; S$
CALL DISPV(S$)
END
SUB DISPV(S$)
FOR I = 1 TO LEN(S$)
B$ = MID$(S$, I, 1)
C$ = UCASE$(B$)
IF C$ = “A” OR C$ = “E” OR C$ = “I” OR C$ = “O” OR C$ = “U” THEN
PRINT B$
END IF
NEXT I
END SUB

iii) Write a program to create a sequential data file “Employee.Dat” to store employees’ name, address, age, gender and salary.
OPEN “Employee.dat” FOR OUTPUT AS #1
DO
CLS
INPUT “ENTER EMPLOYEE’S NAME”; N$
INPUT “ENTER ADDRESS”; A$
INPUT “ENTER AGE”; A
INPUT “ENTER GENDER”; G$
INPUT”ENTER SALARY”; S
WRITE #1, N$, A$, A, G$, S
INPUT “DO YOU WANT TO CONTINUE”; CH$
LOOP WHILE UCASE$(CH$) = “Y”
CLOSE #1
END
***

Saturday, February 16, 2019

Wap to display 1, 31,. 531, 7531, 97531

Wap to display
1
3 1
5 3 1
7 5 3 1
9 7 5 3 1

CLS
FOR i = 1 TO 5
    c = 2 * i - 1
    FOR j = 1 TO i
        PRINT c;
        c = c - 2
    NEXT
    PRINT
NEXT

END

Monday, February 4, 2019

PABSON, Kathmandu SEE QUALIFYING EXAM-2075 Answer Solved





PABSON, Kathmandu
SEE QUALIFYING EXAM-2075
Opt II. Computer


Group A
Computer Fundamental (22 marks)

1. Answer the following questions:                           (5×2=10)
a.   What is network interface card? Write down the advantage of it in a network.
      Ans: It is a card that connects computer within a network. The advantage is to present the platform for a communication between the computers within a network.
b.   What is search engine? For what it is used?
      Ans: Search engine is the website that allows the user to search the information based on keywords on combination of keywords. They are used to locate specific sites and information.
c.   What is the role of multimedia in an advertisement?
      Ans: The role of multimedia in advertisement is to promote any items and approach new user to   use it perfectly. 
d.   Why do the computer systems need regular maintenance?
      Ans: Computer system need regular maintenance to keep the computer hardware in good working condition and it also helps to find out problems in hardware and correct the problems before they cause several damages.
e.   List any two points to protect your computer from the virus.
      Ans: Any two points to protect your computer from the virus are
                i) Install a good antivirus program and update its virus definition file frequently.
                ii) Do not use pirated software.
2.  a. Perform the binary operation.                                                  (2×1=2)
i. (1111 + 1101) – (1001)
            Soln:
  1  1  1  1
+1  1  0  1
1 1 1  0  0
         -    1  0  0  1    
            1 0  0  1  1

            (1111 + 1101) – (1001) = 10011

ii. 1101 ´ 11 ¸ 101
            Soln:
            1 1 0 1
   ´ 1 1
1 1 0 1
         1 1 0 1 ´    
     1 0  0 1 1 1
            Now, Dividing
            101) 100111 ( 111
                     -101
                       1001
                        -101
                          1001
                           -101
                             100
            Quotient = 111
            Remainder = 100
 b. Convert as indicated.                                                  (2×1=2)
      i. (235)8 into decimal
      Soln:
      Converting Octal into Decimal
       =2 ´82 + 3  ´ 81 + 5  ´ 80
       =2´64 + 3´8 + 5´1
       =128 + 24 + 5
       =157

      (235)8 = (157)10

      ii. (BA5)16 into binary
      Soln:
      Converting hexadecimal into Binary,
      B = 1011
      A = 1010
      5 = 0101
      =(101110100101)2
      (BA5)16 = (101110100101)8


3. Match the following.                                                                      (4 x 0.5 = 2)
Group A                           Group B
a.     Animation                 i. The creation and manipulation of picture images in the computer
b.     Graphics                     ii. A system that enables one or more users to move and react with  
                                             computer graphics
c.      Multimedia                 iii. The moving graphic images
d.     VR                              iv. The combination of different media

Ans:
Group A                           Group B
     a.     Animation                 i. The moving graphic images
    b.     Graphics                     ii. The creation and manipulation of picture images in the 
                                                computer graphics
c.      Multimedia                 iii. The combination of different media
d.     VR                              iv. A system that enables one or more users to move and react with  
                                             computer graphics
4. Give the appropriate technical terms of the following:   2                                  (4×0.5=2)
a. A mode of transmission in which data flows in the both directions, but only one at a time.
Ans: Half Duplex Mode
b. Message sent electronically through computer network.
Ans: E-mail
c. A class of program that searches your hard drive and floppy disks for any known or potential virus.
Ans: Antivirus Software
           d.     The technique used to provide medical information and services through the internet.

Ans: E-medicine


6. Write the full forms of the followings.                             (4X 0. 5 = 2)
POP : Post Office Protocol
DVD : Digital Versatile Disk
MBR     : Master Boot Record

VHF : Very High Frequency

4. Choose correct answer.                                        (4 x 0.5 = 2 )
      a. Opera and Firefox is a/an.................
      i. chat program               ii. Web browser         
      iii. search engine             iv. None of the above
      b. The temperature in the computer system should be maintained between ..... to ....
      i. 210 C to 240 C        ii. 220 C to 250 C        iii. 230 C to 260 C       iv. None of above 
      c. Main component of multimedia
      i. Floppy disk      ii. Magnetic disk   iii. Sound card                      iv. All of the above
      d. Some of the methods of hardware protection are
      i. Password Policy                      ii. Security Lighting        iii. Scan disk       iv. All of the above




Group ‘B’
[Database Management System - 10 Marks]
7. Answer the following questions:                                       (3×2=6)
a.   What is an electronic database? List any two advantages of it.
      Ans: An electronic database refers to an organized collection of data stored in a computer in such a way that its content can be easily accessed. Any two advantages are:
      i) We can search data very easily.
     ii) Modification is very easy in comparison of manual database.
b.   What is DBMS? What are the applications of DBMS?
Ans: DBMS is a software that helps to extract, view, and manipulate data in an organized way. MS-Access and FoxPro are the applications of DBMS.
c.   What is a form and what are the uses of form in MS-Access?
Ans: Form is an object of MS-Access that helps to view, add and modify the content of a file. It gives a separate platform to handle data.
8. Choose the correct answer:                                                        (4×0.5=2)
a. A field name can be upto 255 characters long. False
b. OLE is the data type of MS-Access. True.
c. Collecting multiple related fields is called report. False
d. Validation rule specifies the expression that checks the invalid data. True

9. Match the following.                                                                  (4 x 0.5 = 2)
      Group A                           Group B
      Query                              - view data
      Report                             - Relationship
      One to One                      - Action query
      Delete Query                    - Extract selected data
                                                - Database software
     
      Group A                           Group B
        Query                              Extract selected data
      Report                             - view data
      One to One                      - Relationship
      Delete Query                    - Action query
                                               

Group C
[Programming-18 marks]
10. Answer the following questions.
a.   What is procedure? 

      Ans: Procedure is a section of code which performs one or more specific tasks and can be accessed from remote location. 
b.   Write down the name of different types of operators used by C language?
Ans: The name of different types of operators used by C language are Arithmetic, Relational,  Logical, Unary, Conditional and Assignment operator.
c.   Write the function of the following statements.
      i. NAME...AS:  Rename the data file.
      ii. LINE INPUT#: Read data assuming a single value.

11. Rewrite the given program after correcting the bugs.                         2

REM to copy from old file to new file
OPEN "info.dat" for INPUT AS #1
OPEN "temp.dat" for OUTPUT AS #2
DO UNTIL EOF(1)
INPUT #2, n$, p$, d$, s
WRITE #1, n$, p$, d$, s
WEND
CLOSE #2, #2
END




Debugged program:
REM to copy from old file to new file
OPEN "info.dat" for INPUT AS #1
OPEN "temp.dat" for OUTPUT AS #2
DO UNTIL EOF(1)
INPUT #1,  n$, p$, d$, s
WRITE #2, n$, p$, d$, s
LOOP
CLOSE #1, #2
END

12.  Find the output of the given program.                           2
     
      DECLARE FUNCTION RESULT (N)
      N = 4
      PRINT RESULT (N)
      END

      FUNCTION RESULT (N)
      FOR I = 1 TO N
      T = I + 2
      D = D + T
      NEXT I
      RESULT = D
      END FUNCTION

      Ans: Output is:    
                  18



13.       Study the following program and answer the following questions that follow:                                                                                   2
DECLARE SUB SERIES(A, R, N)
CLS
INPUT "ENTER FIRST TERM"; X
INPUT "NUMBER OF TERMS TO BE GENERATED:"; Z
CALL SERIES (X,Y,Z)
END

SUB SERIES (A, R, N)
FOR I = 1 TO N
PRINT A
A=A*R
NEXT
END SUB

a. What will be the output if the user input 3, 2 and 4 for variables X, Y and Z variables?
Ans: The output will be
3
6
12
24

b. What type of parameter X, Y and Z are?
Ans: X, Y and Z are actual parameters.
14.
a.   WAP to convert Celcius temperature in Fahrenheit using FUNCTION.....END FUNCTION.   3
Solution:
DECLARE FUNCTION TEMP(C)
CLS
INPUT "ENTER THE TEMPERATURE IN CELCIUS:"; C
PRINT "TEMPERATURE IN FAHRENHEIT="; TEMP(C)
END

FUNCTION TEMP(C)
TEMP = 9*C/5+32
END FUNCTION

b. WAP to check whether the input number is palindrome or not using SUB.....END SUB.                                                                                                   3
Solution:
DECLARE FUNCTION CHECK(N)
CLS
INPUT "ENTER ANY NUMBER"; N
CALL CHECK(N)
END

SUB CHECK(N)
A=N
REV=0
WHILE N < > 0
R = N MOD 10
REV=REV*10+R
N=INT(N/10)
WEND
IF REV = A THEN
PRINT "IT IS PALINDROME"
ELSE
PRINT "IT IS NOT PALINDROME"
END IF
END SUB


c. Create a sequential data file "std.dat" to store names and marks obtained in English, Math Science subjects for few students.            3
               
     
OPEN "std.dat" FOR OUTPUT AS #1
DO
CLS
INPUT"Enter your name"; N$
INPUT "Enter marks in English"; E
INPUT "Enter marks in Math"; M
INPUT "Enter marks in Science"; S
WRITE #1, N$, E, M, S
INPUT "Do you want to continue or not(y/n)"; ch$
LOOP WHILE UCASE$(ch$)="Y"
CLOSE #1
END
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