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INFORMATICS PRACTICES

FINDING OUT ERRORS
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1. Find the error(s), if any, in the following code :

(i) x := y + 200;

if x < 10

Y = 30;

Else if x<40 then

Y :=30

End

(ii) DECLARE

v_empno NUMBER[4];

v_empname varchar2(20);

BEGIN;

SELECT empno, ename, salary

INTO v_empno, V-ename

FROM emp

FOR empno = 1234;

END;

 

 

2 . Find the error(s), if any, in the following code :

(i) DECLARE

V_BONUS number default 10;

V_COMMISSION number default 30;

V_STATUS Boolean : = True

BEGIN;

V_BONUS < V_COMMISSION :=V_STATUS;

END;

(ii) DECLARE

v_empno NUMBER[4];

v_empname varchar2(20);

begin Boolean : = True

START

SELECT empno, ename, salary

INTO v_empno, V-ename

FROM emp

FOR empno = 1234 and 2345

END;

 

 

3 . Find the error(s), if any, in the following code :

Declare

T number(2) = 0;

I number(2) = 0;

No number(2) = 5;

Begin

Do while I<=10

T:=no*I;

Dbms_output(no||*||I|| = ||t);

I:=I+1;

End loop;

 

 

 

 

 

4 . Find the error(s), if any, in the following code :

DECLARE

BONUS NUMBER DEFAULT = 10;

STATUS BOOLEAN:=TRUE

BEGIN;

IF BONUS >1000

PAY=BONUS+1000;

ELSEIF BONUS >2000

PAY= BONUS+1500;

END;

 

5. Find the error(s), if any, in the following code :

Declare

T char (5) :=*;

I number(2) :=0;

J number(2);

Begin;

While I<=5 loop

J =1;

While j<=I

Dbms_output.put(t);

J:= j+1;

Endloop

I:= I+1;

Endloop

End;

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Last Updated on 22/jun/2004