CBSE Class 12 Informatics Practices Sample Paper 2014 (7)

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1 Richika is a programmer at Alpha Builders. To calculate wages to be paid to labourers she has developed the following GUI in Netbeans 

CBSE Class 12 Informatics Practices Sample Paper 2014 (7)

Male and Female labourers are respectively paid at the rate of Rs. 140/- per day and Rs. 160/- per day. Skilled labourers are paid extra at the rate of Rs. 50/- per day.

(i) What should be done so that only one of the radio button (Male and Female) can be selected at a time ?

(ii) Write code to do the following :

a) Calculate and display the Total wages in corresponding label when the “Calculate Wages” button is pressed.

b) Clear the Name and No. of days worked text fields.

c) Close the application when the “STOP” button in pressed.

(Assume any suitable names for various controls on the form)

2 Rewrite the following program code using for loop: 

int i = 1, sum = 0;

while (i < 10)

{ sum += i;

i += 2;

}

3 Rakesh works in organization. He wishes to create controls on a form for the following functions. Choose appropriate controls from Text box, Label, Option button, Check box, List box, Combo box, Command button, and write in the third column. 

CBSE Class 12 Informatics Practices Sample Paper 2014 (7)1

4 The following code has some error(s). Rewrite the correct code underlining all the corrections made. 

int p, q =15;

p= = q + 15;

if (p= =q)

{ jTextField1.setText(“p and q are unequal”);

jTextField2.setText(“they are not equal”); break;

}

Please refer to attached file for CBSE Class 12 Informatics Practices Sample Paper 2014 (7).

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