Analytical Questions Qbasic Programs [SEE Qbasic Practice PART I]

1.      DECLARE SUB TEST(A, B, C)

LET X=4

LET Y=7

LET Z=12

CALL TEST (X, Y, Z)

PRINT X, Y, Z

END

SUB TEST(A, B, C)

A=A+3

B=B+2

SUM=A+B+C/3

PRINT SUM

END SUB

i)What happens if CALL TEST(X, Y, Z) is replaced by CALL TEST(A, B, C)

ii)List the formal and real parameters used in the above program.

2.      DECLARE SUB word(B$)

CLS

A$ = “Computer science”

B$ = “Computer Programming”

Call word(a$)

Print A$

Call word (B$)

End

SUB WORD (c$)

L = LEN(C$)

POS = (80 – L)/2

Print tab (pos); C$

C$ = “examination”

END SUB

                                                                                                                                                                                                                                                                                                                  

i)Write the output of the above program.

ii)How is the arguments passed?

iii)What will the print A$ statement in module print?

iv)Is C$ actual or formal parameter?

3.      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

i.Write actual and formal parameter used in the program.

ii.What would be its output if x=1, y=2,z=3?

4.      DECLARE SUB SEQUENCE (A,B,C)

CLS

X=10

Y=20

Z=30

CALL SEQUENCE (X,Y,Z)

END

SUB SEQUENCE (C,B,A)

PRINT A,B,C

END SUB

i.List the formal parameters and actual parameters used in the above program.

ii.Will the above program execute if the position of parameter is to be changed? If ‘yes’ then which sequence of number list will it print either 10,20,30 or 30,20,10?

5.      DECLARE SUB ADD(A,B)

CLS

INPUT “ENTER TWO NUMBERS”; X,Y

CALL ADD(X,Y)

END

SUB ADD(A,B)

C = A + B

PRINT “Sum is”; C

END SUB

i.Write the name of procedure in above program.

ii.List arguments and parameters in the above program.

6.      DECLARE SUB TEST (A, B, C)

LET X = 4

LET Y = 7

LET Z = 12

CALL TEST (X, Y, Z)

PRINT X, Y, Z

END

SUB TEST (A, B, C)

A=A+3

B=B+2

SUM=A+B+C/3

PRINT SUM

END SUB

i.What will be the output of the above program?

ii.List the arguments and parameters used in the above program.

7.      DECLARE SUB TEST (A, B, C)

INPUT "Enter three different numbers:"; X, Y, Z

CALL TEST(X, Y, Z)

END

SUB TEST (A, B, C)

IF A > B AND A > C THEN

T = A + B + C

ELSEIF B > A AND B > C THEN

T = A * B * C

ELSE

T = (B + A) / C

END IF

PRINT T

END SUB

i.List formal and real parameters used in the above program. 

ii.What happens if “CALL TEST(X,Y,Z)” is replace by “CALL TEST(A,B,C)”.

8.      DECLARE FUNCTION ADD(N)

CLS

FOR  CNT= 1 TO 3

READ  NUM

PRINT ADD (NUM)

NEXT CNT

DATA  8, 7, 3

END

FUNCTION ADD(N)

S=0

FOR G=1 TO N

S=S+G

NEXT G

ADD=S

END FUNCTION

i.Name the actual and formal parameter used in above program.

ii.What is the value of NUM when the value of CNT is 2?

9.      DECLARE SUB RESULT (N)

CLS

INPUT "ENTER ANY NUMBER"; NUM

CALL RESULT (NUM)

END

SUB RESULT (N)

DO UNTIL N = 0

R = N MOD 10

IF R MOD 2 = 0 THEN

S = S + R

END IF

N = N \ 10

LOOP

PRINT S

END SUB

i.List the actual and formal parameters in the above program.

ii. What will be the output of the program if the input is 1234?

10.   DECLARE SUB TEST (W$)

CLS

INPUT ”ENTER AWORD”; A$

CALL TEST (A$)

END

SUB TEST (W$)

FOR K=1 TO LEN (W$)

U$=MID$(W$,K,1)+U$

NEXT K

PRINT U$

END SUB

i.List the argument and parameters used in the above program.

List the library function used in the above program.

11.   DECLARE  SUB EXAM (N$)

CLS

INPUT "Enter Word", WO$

CALL EXAM (WO$)

END

SUB EXAM(N$)

FOR I=1 TO LEN (N$)

PRINT RIGHT $(N$,1)

NEXT I

END SUB

i.Write the names of two built in functions used in the program.

ii.List the real name and formal parameter in the program.

12.   DECLARE SUB RESULT (TXT$)

TEXT$ = "SYSTEM PROGRAMMING"

CALL RESULT (TEXT$)

END

SUB RESULT (TXT$)

FOR I = 1 TO LEN(TXT$)

SCAN$ = UCASE$(MID$(TXT$, I, 1))

IF I MOD 2 = 0 THEN

TEMP$ = TEMP$ + UCASE$(SCAN$)

ELSE

TEMP$ = TEMP$ + LCASE$(SCAN$)

END IF

NEXT I

PRINT TEMP$

END SUB

i.What is the output of the above program?

ii.List the actual and the formal parameters sued in the program.

13.   DECALRE SUB ADD(A,B)

CLS

X= 4

Y= 3

CALL ADD(X,Y)

END

SUB ADD(A,B)

Z = A +B

PRINT A;”+”;B;’”=”;Z

END SUB

i.List the local and global variables.

ii.What  is the name of procedure used in above program?

14.   DECLARE FUNCTION XYZ(N)

CLS

A = 135 : B = A

A = XYZ(A)

PRINT “THE RESULT IS”,

IF X = B THEN PRINT “OK” ELSE PRINT “NO”

END

FUNCTION XYZ(N)

DO WHILE N > 0

RE = N MOD 10

N = N / 10

T = N * 10 + RE

LOOP

XYZ = T

END FUNCTION

a)      What will be the output of the above program?

b)     Count the total number of global and local variables in the above program and list them.

c)      Can we replace the fourth line of the program X = XYZ(A) by X = XYZ(131) or not? Differentiate between X = XYZ(A) and XYZ(131)

d)     If the value of variable N = 7 the what will be the value of variable RE?

15.   DECLARE FUNCTION PRO (A,B)

CLS

INPUT “Enter two number “:A,B

RES= PRO (A,B)

PRINT “PRODUCT =”: RES

END

FUNCTION PRO (A,B)

P=A*B

PRO = P

END FUNCTION

i) Write the local variables and global variables used in the program.

ii) Writ the name of the function used in the program.

16.   DECLARE FUNCTION Prod(A,B)

CLS

INPUT “Enter first number:”;A

INPUT “Enter second number:”;B

PRINT “the product of two number=”;Prod(A,B)

END

FUNCTION Prod(A,B)

P=A*B

Prod=P

END FUNCTION

i.List all the numerical variables used in the program.

ii.List all the local variables used in the program.

17.   DECLARE FUNCTION DESP$(A$,B$,C$)

INPUT A$,B$,C$

PRINT DISP$( A$,B$,C$)

END

FUNCTION DESP$(A$, B$, C$)

L1=LEN(A$)

L2=LEN(B$)

L3=LEN(C$)

IF L1>L2 AND L1>L3 THEN

ANS$=A$

ELSEIF L2>L3 AND L2>L1 THEN

ANS$=B$

ELSE

ANS$=C$

END IF

DISP$=ANS$

END FUNCTION

i.Make a list of local variables in the given program.

ii.What is the function of PRINT DISP$(A$,B$,C$)?

18.   DECLARE FUNCTION COUNT (N ())

DIM N(10)

FOR I = 1 TO 10

READ N(I)

NEXT

DATA 12,34,56,11,13,45,33,90,99,78,87

A= COUNT (N ())

END

FUNCTION COUNT (N ())

FOR J = 1 TO 10

IF N (I) MOD 2= 0 THEN

E=E+1

ELSE

O=O+1

NEXTPRINT O, E

END FUNCTION

i.What may be the output of the above program?

ii.List out global and local variables used in the program.

iii.List out expression used in the program.

iv. How the argument is passed either by reference or by value?

19.   DECLARE FUNCTION NUM(N)

CLS

N=14

PRINT NUM(N)

END

FUNCTION NUM(N)

WHILE N<>0

R=N MOD 2

S=S+R*10^P

P=P+1

N=N\2

WEND

NUM=S

END FUNCTION

i.List the local variable used in the function procedure.

ii.What will be the output if the program?

20.   DECLARE SUB TEST(A,B)
CLS
X=2: Y=2
CALL TEXT(X,Y)
PRINT X,Y

END

SUB TEST(P,Q)
FOR I= P TO Q
P=P+Q
Q=P+Q
NEXT
PRINT P,Q
END SUB

i.What will be the output of the above program?
ii.List down the global variable used in the above program.

21.   DECLARE SUB CONVERT(N)

CLS

INPUT “ENTER A NUMBER”; N

CALL CONVERT(N)

END

SUB CONVERT(N)

A=2

WHILE A<>0

R = N MOD A

A = A \ B

B$ = STR$(R) +B$

WEND

PRINT R

END SUB

i.List out the number of local variable used in SUB procedure.

ii.What will be the output of above program if N=12

22.   DECLARE SUB SERIES(A, B)

DECLARE FUNCTION SUM(P,Q)

COMMON SHARED N

INPUT “Enter First Term”;X

INPUT “Enter Second Term”;Y

INPUT “Enter Number of Terms to be generated”; N

CALL SERIES(X, Y)

END

SUB SERIES (A, B)

FOR I = 1 TO N

PRINT A

A=SUM(A,B)

NEXT I

END SUB

FUNCTION SUM (P,Q)

SUM=P+Q

END FUNCTION

i.What will the output if X=10, Y=8 and Z=5.

ii.List out the local variables and global variable in the above program.

23.   DECLARE SUB SERIES(X, Y, Z)

DECLARE FUNCTION SUM(X, Y)

DIM SHARED I

CLS

INPUT “Enter First Term”;X

INPUT “Common Difference”;Y

INPUT “Enter Number of Terms to be generated”; Z

CALL SERIES(X, Y, Z)

END

SUB SERIES (X, Y, Z)

FOR I = 1 TO Z

PRINT X

X = SUM(X, Y)

NEXT I

END SUB

FUNCTION SUM (X, Y)

SUM=X+Y

END FUNCTION

a)      What will be the output of the program if the user inputs 2, 3, 4 for the variables X, Y, Z respectively?

b)     How many times the function SUM(X, Y) will be executed if the values of X, Y, Z are 2, 4, 6 respectively?

c)      What type of variables X, Y and I are?

d)     Will the program run if the value of Z is less than X and Y?

24.   DECLARE SUB CHECK()

CLS

CALL CHECK()

END

SUB CHECK

A=1

FOR I= 1 TO 5

PRINT A

A=A+3

NEXT I

END SUB

i.Write the name of the procedure used in the above program.

ii.What will happen if CALL statement is missing.

25.   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

i.Write the name of the function used in the above program.
ii.List out the mathematical function (Library function) used in the above program.