Kendriya vidyalaya sangathan, Chennai region
XI : COMPUTER SCIENCE (083)
Time : 3 Hours Max Marks : 70
Instructions:
(ii) Use C++ language.
1.
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(a)
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Expand the following acronym
(i) RISC
(ii) MbPS
(iii) CD
(iv) CPU
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2
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(b)
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What is the use of ROM in computer?
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1
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(c)
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What is the use of RAM and Cache memory in computer? Identify their difference.
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2
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(d)
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Perform the following conversion:
(i) (5EA)16 to Decimal
(ii) (1784)10 to Octal
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2
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(e)
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What is the use of spreadsheet software? Explain it important features.
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1
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(f)
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What is the use of Disk Cleanup utility?
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1
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(g)
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What is Time Sharing operating system?
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1
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2.
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(a)
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What is the difference between while and do while loop? Explain with suitable example.
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2
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(b)
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Write the following program after removing the errors and underline the corrections:
#include <iostream.h>
structure MEMBER{
int Mno;
}
void reg(){
cout<<M1.Mno<<endl;
}
void main()
{
MEMBER M ;
M.reg();
}
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(c)
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Find the output of the following program:
#include <iostream.h>
struct GAME
{ int Score, Bonus;};
void Play(GAME &g, int N=10)
{
g.Score++;g.Bonus+=N;
}
void main()
{
GAME G={110,50};
Play(G);
cout<<G.Score<<":"<<G.Bonus<<endl;
Play(G,15);
cout<<G.Score<<":"<<G.Bonus<<endl;
}
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2
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(d)
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Write a program which take one integer number from user and display whether it is even or odd.
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2
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(e)
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Write a program which get sales amount from user and display its 12% discount amount.
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2
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3.
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(a)
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Find the output of the following program:
#include<iostream.h>
void withdef(inthn = 20){
for(inti=20;i<=hn;i+=5)
cout<<i<<",";
cout<<endl;
}
void control(int&mn){
mn+=10;
withdef(mn);
}
void main(){
intyn=30;
control(yn);
cout<<"Number="<<yn<<endl;
}
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2
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(b)
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Write the following program after removing the errors and underline the corrections:
#include[iostream.h]
void main(){
int i;
for(i=1,i<=10,i++){
cout>>endl<<i;
}
}
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2
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(c)
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What is the significance of “\n” and “\t” character constants in C++? Give examples.
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2
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(d)
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What will be the value of k :
#include<iostream.h>
void main(){
int k;
k=5<7?500:700;
cout<<endl<<k;
}
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2
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4.
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(a)
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Write a program which has one structure book and two functions getdata() and showdata() whose details are given below :
1. Structure Book : it have following data members- bno,author,pub,pages,price.
2. Getdata() : receive values in book object from user.
3. Showdata() displays values of book object.
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4
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(b)
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Write a program which have
1. Name structure to store name of a person which have f_name, m_name and l_name members.
2. Employee structure to store the information of employee which have eno, empname (object of name Structure), deptno, basic, da, hra, netsal.
3. AddSal()function with Employee type parameter to calculate the netsal by adding basic, da and hra.
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4
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(c)
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Write a program to find smallest number in an array.
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3
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5.
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(a)
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What are the rules for naming the identifiers?
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2
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(b)
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Write the steps of Program Solving methodology and techniques.
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2
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(c)
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Describe any 4 characteristics of Good Program.
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2
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(d)
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What is a comment? How many types of comments are possible in C++?
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2
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(e)
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What is an error? Describe types of errors.
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2
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6.
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(a)
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What is an explicit type conversion? Explain it with suitable example.
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2
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(b)
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What do you mean by dynamic initialization of a variable? Give examples.
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2
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(c)
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What is the use of conditional operator? Explain with suitable example.
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2
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(d)
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Write a program to print the following output from a two dimensional array whose size is 3X3.
For example array contain following data
Then output will be :
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3
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7.
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(a)
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Write a program which has one function Search() with two parameters(string and character) to search character in string and return its position if character is not find out then return -1.
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4
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(b)
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Write a function IsPrime() which has one integer parameter n and return true if n is a prime number otherwise return false.
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4
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(c)
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Write a function that takes three arguments: the name of a float array, the array size, and a float value. Have the function set each element of the array to float value.
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4
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