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Padma Seshadri Bala Bhavan Senior Secondary School, K.K.Nagar
XI Std. – Exercise (2015-16)
Write answers in A4 sheet and submit it.
1. Write a function named Armstrong(int m) which accepts the limit as an argument and prints
all Armstrong numbers upto that limit. Write main() to execute this function.
2. Write a function named prime(int m) which accepts the limit as an argument and prints all
prime numbers upto that limit. Write main() to execute this function.
3. Write a function named perfect(int m) which accepts the limit as an argument and prints all
perfect numbers upto that limit. Write main() to execute this function.
4. Write a function named fiboprime(int n) which accepts the limit as an argument and prints
all Fibonacci numbers upto the limit and check if that numbers are prime or composite.
Write main() to execute this function.
5. Write a function named palindrome(int a) which accepts an integer as an argument and
checks if it is a palindrome or not . Write main() to execute this function.
Padma Seshadri Bala Bhavan Senior Secondary School, K.K.Nagar
XI Std. – Computer Science – Practice Paper (2015-16)
1. What is the difference between „a‟ and “a”.
2. What is an array? Explain with an example.
3. Write the number of bytes occupied by the following variables.
a) int a;
b) char b[20];
c) int y[]={1,2,3,4,5,6,};
d) char x[]=”Halfyearly\0”;
4. Check if the following declarations are correct. If not, give reasons.
a) int b=10,20,30,40};
b) int a[][3]={2,4,-5,-7,4,3};
c) char x[5]=”Clever students”;
d) char a[]=”It is a rainy day”;
5. Debug the following programs and write the corrected coding only.
a) #include(iostream.h)
b) #include<iostream.h>
void main()
#include<stdio.h>
{
void main()
int x[]={50,60,30,40},y;
{
count=4;
char a[20],b;
cin>>y;
gets(a);
for (i=count;i>0;i--)
b="Study well";
{ switch(i)
if (a==b)
{
cout<<"Same words";
case 0:
else
case 1:
cout<<"Different
cout<<y*x[i]<<endl;
words";
case 2: cout<<pow(x[i]);
}
case 3: cout<<x[i];
}
}
}
6. Predict the output of the following programs :
a) #include<iostream.h>
#include<ctype.h>
void main()
{
char name[30]=”11std BriGht
fuTUre”;
for (int x=0;x<strlen(name);x++)
if (islower(name[x]))
name[x]=toupper(name[x]);
else
if (isdigit(name[x])
name[x]=name[x]+1;
elseif (isupper(name[x]))
if (x%2 !=0)
name[x]=tolower(name[x]);
else
name[x]--;
cout<<name;
}
void main()
{
char a[ ]="ExAm-2012
AheAd";
int i;
for(i=0;a[i];i++)
if(a[i]>=97 && a[i]<=122)
a[i]--;
else
if(a[i]>='0' && a[i]<='9')
a[i]=a[i-1];
else
if(a[i]>='A' &&
a[i]<='Z')
a[i]+=32;
else
a[i]='#';
puts(a);
}
b)
7. Write a program to accept 2 arrays A and B of same size in ascending order. Merge these
two arrays in ascending order and print the resultant array.
8. Write a program to accept a 2d array of integers of odd number of rows and columns and
display the elements of the middle row and the elements of the middle column.
Example, if the array content is
3
5
4
7
6
9
2
1
8
The output is
Middle Row :
7
Middle Column : 5
6
6
9
1
9. Write a program to accept a string and print number of vowels, number of uppercase
characters present in that string.
10. Write a program to accept 2 arrays A and B of same size. Calculate their corresponding
elements with the formula 2*A[i] + 3*B[i] where i varies from 0 to n-1 and transfer the
resultant content in the third same sized array. Print the resultant array.
11. Write a program to accept a 2d array of integers and display the boundary elements as per
the given example.
Example, if the array content is
3
5
4
7
6
9
2
1
8
8
6
9
The output is
3
5
4
7
9
2
8
8
6
9
12. Write a program to accept a string and print the number of consonants, number of digits
present in that string.