CBSE Board Class 11 Computer Science Previous Year Question Papers 2007

Board Sample Paper CBSE Board Class 11 Computer Science Previous Year Question Papers 2007

Material downloaded from http://myCBSEguide.com and http://onlineteachers.co.in CLASS 11 Class – XI Computer Science Time :-11/2 Hrs. M.M. 40 Note :- (i) All questions are compulsory. (ii) Programming Language C++. Q1. Write the differences between procedural programming and modular programming. Q2. What are the advantages offered by inheritance? Q3. Write any 2 disadvantages of OOPs Language. Q4. What is significance of isostream h? Q5. Write the difference between Logical Errors and Run-time error with suitable example. Q6. What factors guide the choice of identifier in program? Q7. What do you understand by the term dynamic initialization. Explain with example. Q8. Why the char data-type is also known as integer type? Q9. Explain the term ‘variable’. How many values are associated with it? Q10. What is unary operator? Write two example of unary operator. Q11. Find the output of following program code: Void main ( ) { int x = 7, y = 5; cout << x ++; cout << ++ x; cout << x; cout << y ++ <<”, “ << ++ y; Q12. Write the corresponding C++ expression:(i) 2 2 2a b c + + (ii) 3 32 = x + y -2xy (iii) 2 – 4y (P + Q)2 (iv) e2 - x Q13. Determine the hierarchy of operators and evaluate the following:(i) x j = j/3 2 10 / 5 + + (when j =5) (ii) s q a g = ? + * / 4 6 / 2 2 / 3 6 / (when q = 2, a = 4, g = 3) (iii) root = sqrt (b b a c ? 4 ) (when a = 2 b = 7, c = 2) Q14. Determine the errors:(i) cout << “Hello”; (ii) int a = 2, b = 5, c = 11; d = 21; (iii) cin >> x >> y; >> z; (iv) a c a b = b ; Q15. (a) Write a program in C++ to exchange the value of 2 numbers entered by the uses. e.g. if a = 10, b = 15 output should be a = 15, b = 10 (b) Write a program to accept 4 digit number from the user and convert it into number of years, months and days respectively.

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