Download Holiday Homework

Kendriya Vidyalaya Aliganj
Holiday Homework
Class XI
Computer Science
Write program for the following:
LE 6.1 Write a program to print number from 1 to 10.
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int i;
for(i=1;i<=10;++i)
cout<<"\n"<<i;
getch();
}
LE 6.2 Write a program to calculate the sum of first 10 natural number.
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int i,sum;
for(i=1,sum=0;i<=10;++i)
{
sum=sum+i;
}
cout<<"\nSum of first 10 natural numbers is:\n"<<sum;
getch();
}
LE 6.3 Write a program to find the factorial value of any number entered through the keyboard.
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int fact,i,n;
cout<<"Enter te number: \n";
cin>>n;
for(i=1,fact=1;i<=n;++i)
{
fact=fact*i;
}
cout<<"Factorial of "<<n<<" natural numbers is: "<<fact;
getch();
}
LE 6.4 Write a program to find the value of one number raised to the power of another.
#include<iostream.h>
#include<conio.h>
#include<math.h>
void main()
{
clrscr();
float a,b,c;
cout<<"Enter the number and its power:";
cin>>a>>b;
c=pow(a,b);
cout<<"Result is:"<<c;
getch();
}
LE 6.5 Write a program to reveres any given POSITIVE integer number.
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
float a,b;
cout<<"Enter the POSITIVE integer:";
cin>>a;
b=1/a;
cout<<"Reverse of the number is:"<<b;
getch();
}
LE 6.6 Write a program to sum of digits of given integer number.
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int a,b,c,d,e;
cout<<"Enter the number:";
cin>>a;
b=a%10;
c=a/10;
d=c%10;
e=c/10;
cout<<"Sum of the digits is:"<<b+d+e;
getch();
}
LE 6.7 Write a program to check given number is prime or not.
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int n, i, p=0;
cout<<"Enter any positive integer :";
cin>>n;
for(i=2;i<=n/2;++i)
{
if(n%i==0)
p=1;
else
p=0;
}
if(p==0)
cout<<"Prime";
else
cout<<"Composite";
getch();
}
LE 6.8 Write a program to calculate HCF of Two given number.
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int a, b, i, hcf;
cout<<"Enter two integers";
cin>>a>>b;
for(i=1;i<=a || i<=b; ++i)
{
if(a%i==0 && b%i==0)
hcf=i;
}
cout<<hcf;
getch();
}
LE 6.9 Write a program to enter the numbers till the user wants and at the end it should display the count of positive, negative and
zeros entered.
#include<iostream.h>
#include<conio.h>
void main()
{
int n, sum_p=0, sum_n=0, sum_z=0;
char choice;
do
{
cout<<"Enter number ";
cin>>n;
if(n>0)
sum_p++;
else if(n<0)
sum_n++;
else
sum_z++;
cout<<"Do you want to Continue(y/n)? ";
cin>>choice;
}
while(choice=='y' || choice=='Y');
cout<<"Positive Number :"<<sum_p<<"\nNegative Number :"<<sum_n<<"\nZero Number
:"<<sum_z;
getch();
}
LE 6.10 Write a program to enter the numbers till the user wants and at the end it should display the maximum and minimum
number entered.
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int a, max=0, min=0;
char ch;
do
{
cout<<"Enter number :";
cin>>a;
if(a>max)
max=a;
if(a<min)
min=a;
cout<<"Do you want to continue(y/n) :";
cin>>ch;
}
while(ch=='y' || ch=='Y');
cout<<"Max"<<max<<"\nMin"<<min;
getch();
}
LE 6.11 Write a program to print out all Armstrong numbers between 1 and 500. If sum of cubes of each digit of the number is equal
to the number itself, then the number is called an Armstrong number.
For example 153 = ( 1 * 1 * 1 ) + ( 5 * 5 * 5 ) + ( 3 * 3 * 3 )
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int i, a, b, c;
for(i=1;i<=500;i++)
{
a=i/100;
b=i/10-a*10;
c=i%10;
if((a*a*a)+(b*b*b)+(c*c*c)==i)
cout<<i<<"\n";
}
getch();
}
LE 6.12 Write a program to print Fibonacci series of n terms where n is input by user: 0 1 1 2 3 5 8 13 24.....
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
float first,second,third,n;
int i;
first=0;
second=1;
cout<<"How many elements? \n";
cin>>n;
cout<<"fibonacci series\n";
cout<<first<<" "<<second;
for(i=2;i<n;i++)
{
third=first+second;
cout<<" "<<third;
first=second;
second=third;
}
getch();
}
LE 6.13 Write a program to calculate the sum of following series where n is input by user. 1 + 1/2 + 1/3 + 1/4 + 1/5
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int i,n;
float sum=0;
cout<<"Enter the value of n: ";
cin>>n;
for(i=1;i<=n;i++)
sum += 1.0/i;
cout<<"Sum : "<<sum;
getch();
}
LE 6.14 Compute the natural logarithm of 2, by adding up to n terms in
The series 1 - 1/2 + 1/3 - 1/4 + 1/5 -... 1/n where n is a positive integer and input by user.
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int i,n,sign=-1;
float sum=0;
cout<<"Enter the value of n ";
cin>>n;
for(i=1;i<=n;i++)
{
sign *= -1;
sum += sign*1.0/i;
}
cout<<"log 2 : "<<sum;
getch();
}
LE 6.15 Write a program to find product of two non‐negative numbers x and y (Constraint: do not use the multiplication operator)
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int x,y,p=0;
cout<<"Enter the numbers:";
cin>>x>>y;
while(y>0)
{
p=p+x;
y=y-1;
}
cout<<"product is:"<<p<<endl;
getch();
}