QBASIC OUTPUT DEBUG ANALYTICAL COLLECTION SET-8

SET-8

11. Rewrite the following program after correcting the bugs.
DECLARE SUB Series(.)
DLC
EXECUTE Series
END
SUB Series
REM to generate 2 2 4 6 10….. upto 10th term
P=2
Q=2
FOR Ctr=1 TO 5
DISPLAY P,Q,
P=P+Q
Q=P+Q
WEND
END Series()

Ans: Correct program
DECLARE SUB Series(.)
DLC
CALL Series
END
SUB Series
REM to generate 2 2 4 6 10….. upto 10th term
P=2
Q=2
FOR Ctr=1 TO 5
PRINT P,Q,
P=P+Q
Q=P+Q
NEXT ctr
END SUB

12. Write the output of the following program. 2
DECLARE FUNCTION AREA(L,B)
LET L=10
LET B=5
PRINT “The area=”;AREA(L,B)
END
FUNCTION AREA(L,B)
A=L*B
AREA=A
END FUNCTION

Ans: Output
The area= 50

13. Study the following program and answer the questions: 2
DECLARE FUNCTION Sum(A,B)
INPUT “Enter first number:”; A
INPUT “Enter second number:”; B
PRINT “The sum of the two number=”;Sum(A,B)
END
FUNCTION SUM(A,B)
S=A+B
Sum=S
END FUNCTION

a) List the numerical variables used in the above program.
Ans: The numerical variables used in the above program are A, B and S.

b) Will the program run if the first line (i.e. DECLARE….) is deleted?
Ans: Yes, the program will run if the first line (i.e. DECLARE……) is deleted.