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Analytical Questions
Solutions
1. Study the
following program and answer the given
questions. [2×1=2]
OPEN “hospital.txt” FOR INPUT AS #1
OPEN “Temp.dat” FOR OUTPUT AS #2
INPUT “Enter name of the students”; S$
FOR I=1 TO 10
INPUT #1, Nm$, Cl$, A, B
IF S$< >Nm$ THEN
WRITE #2, Nm$, Cl$, A, B
END IF
NEXT I
CLOSE #1, #2
KILL “hospital.txt”
NAME “Temp.dat” AS “hospital.txt”
END
a. What is the main objective of the
program given above?
The main objective of
the program given above is to delete the record according to the entered name.
b. Do you get any problem in the
above program if “Kill” statement is removed? Give reason.
Yes, the program will
display the error message and it won’t delete the record.
2. Study the
following program and answer the given
questions. [2×1=2]
OPEN “EMP.DAT” FOR INPUT AS #1
DO
INPUT #1, N$, A$, S
IF UCASE$(A$)=”KATHMANDU” THEN
PRINT
N$, A$, S
END IF
LOOP WHILE NOT EOF(1)
CLOSE #1
END
a. Write the use of statement “INPUT
#1, N$, A$, S” in the above program.
The use of statement
“INPUT #1, N$, A$, S” in the above program to read data from the data file
EMP.DAT.
b. What happens if you remove
“UCASE$” from the above program?
If UCASE$ is removed
then if Kathmandu is in small letters then it won’t be displayed on the screen.
3. Study the given
program and answer the given questions. [2]
DECLARE FUNCTION test$
(A$)
CLS
INPUT “ENTER ANY WORD”; T$
PRINT test$(T$)
END
FUNCTION test$ (A$)
FOR M = LEN(A$) TO 1 STEP -1
C$= C$+ MID$(A$, M,1)
NEXT M
Test$ = C$
END FUNCTION
a) List
the formal and actual parameters used in the program given above.
Formal parameter= A$ Actual
parameter = T$
b) List
the library function used in the above program.
The library function used in the above program is LEN( ) and MID$(
).
4. Study the following program and answer the given questions.
CLS
OPEN "INFO.DAT" FOR INPUT AS #5
TOP:
INPUT "ENTER NAME"; N$
INPUT "ENTER ADDRESS";A$
INPUT "ENTER PHONE NUMBER";P
WRITE #5, N$, A$, P
INPUT "DO YOU WANT TO CONTINUE (Y/N)?"; AN$
IF UCASE$ (AN$) = "Y" THEN GOTO TOP
CLOSE #5
END
Questions:
a) List the variables used in
above program.
Ans: variables used in above programs are: A$, P, N$, AN$.
b) What is the name of data
file used in above program?
Ans: INFO.DAT is the name of data file used in above program.
5. Study the following program and answer the given questions:
DECLARE SUB PC$ (N)
CLS
INPUT "Enter
a number"; N
CALL PC$ (N)
END
SUB PC$ (N)
FOR I=2 TO N-1
R=N MOD I
IF C=0 THEN
PRINT "Prime
number"
ELSE
PRINT "Composite
number"
ENDIF
END SUB
a. What
is the name of sub procedure?
The name of the sub
procedure is PC$( )
b. List
the local variable.
The local variable are
N, I, R, C
6. Study the following program and answer the given
questions. 2x1=2
DECLARE FUNCTION TEST(X)
X=100
Z=TEST(X)
PRINT Z
END
FUNCTION TEST(X)
FOR R=1 TO X
S=S+I
NEXT R
TEST=S
END FUNCTION
a) How many parameters are used in the above program?
Ans: The parameters used
in the above program is one.
b) How many times does the statement S=S+I execute in the above
program?
The statement S=S+I will
execute 100 times in the above program
7. Read the following
program and answer the given questions.
DECLARE FUNCTION FACT( N )
CLS
INPUT “Enter no”; N
PRINT “Factorial is”; FACT (N)
END
FUNCTION FACT (N)
F = 1
FOR X = 1 TO N
F = F * X
Next X
FACT = F
END FUNCTION
Questions:
a) What
is the name of function procedure used in the above program?
The name of function procedure used in the above program is FACT (
).
b) What
is the main objective of the above program?
The main objective of the above program is to display the
factorial of a given number.
8. Study the following program and answer the given
questions. 2x1=2
DECLARE FUNCTION
Prod(A,B)
CLS
INPUT “Enter first
number”; A
INPUT “Enter second
number”; B
PRINT “The product of
the two number=”; prod(A,B)
END
FUNCTION Prod(A,B)
P=A*B
Prod=P
END FUNCTION
a) List all the
numerical variables used in the program.
Ans: The numerical variables used in the program are A, B and P
b) List the local
variable/s used in the above program.
The local variable/s used in the program are A, B and P.
9. Study the following program and answer the given
questions.
DECLARE FUNCTION SUM(N)
CLS
INPUT”Enter any number”: N
X=SUM(N)
PRINT”The sum of individual digit is “; X
END
FUNCTION SUM(N)
WHILE N<>0
R=N MOD 10
S=S+R
N=INT(N/10)
WEND
SUM=S
END FUNCTION
a) Write the function
of INT.
The
int() function returns the numeric integer equivalent from a given
expression.
b) How
many times the WHILE…..WEND LOOP repeats if the value of N is 123?
The WHILE…..WEND LOOP
repeats 3 times if the value of N is 123
10. Study the following program and answer the given questions:
[2x1=2]
DECLARE FUNCTION count(bs)
INPUT a$
num=count (a$)
PRINT num
END
FUNCTION count (b$)
FOR K=1 to LEN (bs)
aS=MIDS(b$, K, 1)
IF UCASES(a$)="D" THEN
c=c+1
END IF
NEXT K
count = c
END FUNCTION
a) What is the name of FUNCTION procedure used in above program?
The name of FUNCTION procedure used in above program is count(
).
b) List out the formal and actual arguments from the
Formal parameter – b$, Actual parameter – a$
11. Read the following program and answer the given questions:
[2]
DECLARE SUB string(x$)
CLS
X$=“COMPUTER"
CALL string(X$)
END
SUB string(x$)
L=LEN(X$)
FOR A = L to 1 step -2
PRINT MID$(x$.A,1);
NEXT A
END SUB
Questions:
a) What is the value of L in the above program?
Ans: The value of L in the above program is 8.
b) List the numeric and string variable in the above program.
Ans: Numeric variable = L, A
String Variable = X$,
12. Study the following program and answer the given questions.
DECLARE FUNCTION ABC$(N$)
CLS
INPUT “ENTER ANY WORD”; W$
PRINT “THE RESULT STRING IS”; ABC(W$)
END
FUNCTION ABC$ (N$)
FOR I=1 TO LEN (N$)
P$=MID$ (N$,I,1)
R$=P$+R$
NEXT I
SHARED R$
ABC$=R$
END FUNCTION
a) List the arguments and parameters used in above program
Ans: The argument used in the above program is W$ and parameter
is N$.
b) What is the use of SHARED in above program?
Ans: The SHARED keyword in QBASIC is used to declare
global variables in sub module
13. Study the
following program and answer the given questions: [2]
DECLARE FUNCTION
text$(N$)
CLS
INPUT "Enter any
string":X$
PRINT text$(X$)
END
FUNCTION text$(N$)
FOR i=len (N$) TO 1
STEP-1
W$=W$+MID$(N$,i,1)
NEXT i
text$ = WS
NEXT Q
END FUNCTION
Questions:
a) What is
the main objective of above program?
Ans: The main
objective of above program is to reverse the string.
b) List all
the parameters used in above program.
Ans: The parameters
used in above program are X$ and N$
14.
Study the following programs and answer the given
questions. [2x1=2]
DECLARE SUB question (a,
b, c)
CLS
x=10: y=20 : z=15
CALL question(x,y,z)
END
SUB question(a,b,c)
a = a +10
b = b + a
c = a + b
PRINT a,b,c
END SUB
a) What would be its output if
x=1,y=2, z=3?
Ans: The output would be
11 13 24.
b) Write actual and formal
parameters used in the program.
Ans: Actual parameters-
x,y,z
Formal
parameters-a,b,c
15. Study the following program and answer the given questions:
DECLARE FUNCTION TEST (A)
X = 10
Z = TEST (X)
PRINT Z
END
FUNCTION TEST (B)
FOR I = 1 TO B
S = S + I * I
NEXT I
TEST= S
END FUNCTION.
Questions:
a) How many parameters
are used in the above program?
Ans. 1 parameter is used in the above program.
b) How many times does the
statement S=S + I * I will be executed in the above program?
Ans. The statement S= S + I * I will be executed 10 times.
16. Study the following program and answer the given
questions: [2x1 = 2]
DECLARE
FUNCTION A (X)
CLS
X
= 5
Z
= A(X)
PRINT
Z
END
FUNCTION
A (X)
FOR
I = 1 TO X
S
= S + I
NEXT
I
A
= S
END
FUNCTION
a. If
the line S=S+I is changed to S=S+I^2, find the output of it.
Ans:The output will be
55.
b. How
many times does the statement S=S+I execute in the above program?
Ans: The statement
S=S+I executes 5 times.
17. Analytical Questions
OPEN “MARKINFO.TXT” FOR INPUT AS #1
OPEN “TEMP.TXT” FOR OUTPUT AS #2
CLS
DO UNTIL EOF(1)
INPUT #1, REGISTRATIONNUMBER, STUDENTNAME$, ENGLISH, NEPALI,
MATHEMATICS
IF MATHEMATICS<20 THEN
MATHEMATICS=MATHEMATICS+10
END IF
WRITE #2, REGISTRATIONNUMBER, STUDENTNAME$, ENGLISH, NEPALI,
MATHEMATICS
LOOP
CLOSE#1
CLOSE #2
KILL “MARKINFO.TXT”
NAME “TEMP.TXT” AS “MARKINFO.TXT”
END
a) What is the main objective of the
program given above?
The main objective of
the program given above is to increase marks of math by 10 whose marks in math
is less than 20.
b) Do you get any problem in above
program if “Kill” statement is removed? Give reason.
Yes, there will be a
problem in the above program if the "KILL" statement is removed. If
the "KILL" statement is removed, the program will not be able to
delete the existing "MARKINFO.TXT" file.
18. Study the following program and answer the given questions:
(2×1=2)
DECLARE FUNCTION COUNT (NS)
INPUT "Enter a word"; RS
C=COUNT(RS)
PRINT C
END
FUNCTION COUNT(NS)
FOR K=1 TO LEN(NS)
XS=MIDS(NS,K,1)
IF UCASES(XS)="A" THEN
X=X+1
END IF
NEXT K
COUNT=X
END FUNCTION
Questions:
a) List any two library functions used in above program.
Ans: Two library functions used in above program are UCASE$( ) and
MID$( )
b) Write the use of variable "C" in line 3 [i.e.
C=COUNT(RS)] given in the above program.
Ans: The use of variable "C" in line 3 [i.e.
C=COUNT(RS)] is to store the value returned by
COUNT(RS) function.
19. Study the following program and answer
the following questions: (2x 1=2)
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 FUNCTON
i. What is the name of function used in above program?
Ans: The name of function used in above program is NUM ( ).
ii. List the mathematical function used in above program.
Ans: The mathematical function used in above program is INT ( ).
20. Read the following program and answer the given questions.
DECLARE SUB AA (N$)
W$=CYBERCRIME"
CALL AA(W$)
END
SUB AA (N$)
R=LEN(N$) \ 2
E$=RIGHT$(N$,R) + LEFT$(N$,R)
PRINT E$
END SUB
Questions:
a) List the parameter(s) and argument(s) of the program.
Ans: The parameter used in above program is N$ and argument used
in above program is W$.
b) List all the string library functions from the program.
Ans: The string library functions used from the program are LEN (
), RIGHT$( ), LEFT$( ).
21. Study the following program and answer the given
questions:
DECLARE SUB FACTORS(N)
N=10
CALL FACTORS(N)
END
SUB FACTORS(N)
FOR J=1 TO N
R=N MOD J
IF R=0 THEN PRINT J;
NEXT J
END SUB
Questions:
a) Write down the use of MOD in the program.
Ans: The use of MOD in the program is
to determine the remainder of a division operation.
b) How many time the loop executes in the above program?
Ans: The loop executes 10 times in the above program.
22. Study the following program and answer the given questions.
[2×1=2]
DECLARE SUB TEST (A, B)
CLS
X= 7
Y = 5
CALL TEST (X, Y)
END
SUB TEST (A, B)
FOR I = A to B STEP -1
A = A+ B
B = B + A
NEXT I
END SUB
a. List the formal parameter and argument.
Ans: Formal parameters are A and B
Arguments are X and Y
b. Which loop is used in the above program?
Ans: FOR……NEXT loop is used in the above program.
23. Study the following program and answer the given
questions.
[2]
DECLARE SUB TEST(A$)
CLS
A$= “COMPUTER”
END
SUB TEST (A$)
L= LEN(A$)
FOR I = L TO 1 STEP -2
PRINT MID$(A$, I, 1)
NEXT I
END SUB
a) What statement
should be added in the main module to execute the program?
Ans: CALL TEST(A$) statement should be added in the main module to
execute the program.
b) List out the
variables used in the above program with types.
Ans: the variables used in the above program are:
A$ - String Variable
L, I – Numeric Variable
24. Study the following program and answer the given questions:
DECLARE SUB TEST (B$)
CLS
INPUT W$
CALL TEST(W$)
END
SUB TEST (B$)
FOR I=1 To LEN (B$)
PRINT RIGHT$(B$, i)
NEXT I
END SUB
a. Write the names of two
built in functions used in the above program
Ans: The names of two built in functions used in the above program
are LEN ( ) and RIGHT$ ( )
b. List the real parameters of the above program
Ans: The real parameters of the above program is W$
25. Study the following program and answer the given questions:
DECLARE FUNCTION MATH$(R)
CLS
DIM SHARED P
INPUT "Enter first number:"; P
INPUT "Enter second number:"; C
Y$ = MATH$(C)
PRINT Y$
END
FUNCTION MATH$(R)
F=100 MOD R
IF 20 MOD P > 3 AND F < P THEN
MATH$=”True”
ELSE
MATH$=”False”
END IF
END FUNCTION
a) Variable P remained uncalled in the main module. Why?
Ans: Variable P remained uncalled in the main module because P is
declared as global variable and its value can be accessed by MATHS$ ( )
function without passing the value.
b) Find the output if the user supplies P=9 and c=4 running the
program.
Ans: The output of the program if the user supplies P=9 and c=4
running the program is:
False
26. Study the following program and answer the given questions: [2]
DECLARE FUNCTION OUTPUTS(W$)
CLS
W$="CYBER CRIME"
PRINT OUTPUT$ (W$)
END
FUNCTION OUTPUT$ (W$)
FOR M= LEN(W$) TO 1 STEP-2
M$=M$+MID$(W$, M, 1)
NEXT M
OUTPUT$=M$
END FUNCTION
a Why is $ sign is followed by function name?
Ans: The $ sign is followed by function name because the function
returns string value.
b. List the library function used in the above program.
Ans: The library function used in the above program are LEN( ) and
MID$( ).
27. Study the following program and answer the given
questions: 2×1=2
DECLARE SUB
EXAMSEE (A$)
INPUT "Enter any
string", B$
CALL EXAMSEE (B$)
END
SUB EXAMSEE(A$)
FOR I= LEN (A$) TO 1
STEP-1
PRINT LEFT$(A$,1)
NEXT I
END SUB
a) Write the names of two
built in functions used in the program.
Ans: The two built in
functions used in the program are: LEN( ) and LEFT$( )
b) List the real parameter
and formal parameter in the program.
Ans: The real parameter
is B$ and formal parameter is A$
