This document contains solutions to 26 questions on C++ programming. It includes programs to display text using single and multiple cout statements, programs to check if a year is a leap year, solve quadratic equations, check if a number is even or odd, perform arithmetic operations using switch case, display the first 10 natural numbers and their sum, Fibonacci series, factorial of a number, check if a number is prime, find the sum of series, generate patterns with characters and numbers, find the sum and average of array elements, perform linear search on an array, and find the maximum number in an array. The document is prepared by Bijender Kumar and contains the question solutions and output for each program.

1. C++ PRACTICAL FILE
Q1. (a) Program to display the following using single cout
MATHS=90
PHYSICS=77
CHEMISTRY=69
Solution code
//Program to display the program using single cout
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
cout<<"Maths=90nPhysics=77nChemistry=69";
getch();
}
Output
PREPARED BY
BIJENDER KUMAR Page

2. C++ PRACTICAL FILE
Q1. (b) Program to display the following using multiple
cout
MATHS=90
PHYSICS=77
CHEMISTRY=69
Solution code
//Program to display the program using single cout
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
cout<<"Maths=90";
cout<<"nPhysics=77";
cout<<"nChemistry=69";
getch();
}
Output
PREPARED BY
BIJENDER KUMAR Page

3. C++ PRACTICAL FILE
Q13. Program to find that entered year is leap year or not
Solution Code
//Program to find entered year is leap or not
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int year;
cout<<"Enter the yearn";
cin>>year;
if(year%4==0)
{
cout<<"Entered year is a leap yearn";
}
else
{
cout<<"Entered year is not a leap year";
}
getch();
}
Output
PREPARED BY
BIJENDER KUMAR Page

4. C++ PRACTICAL FILE
Q14. Program to solve quadratic equation ax2+bx+c=0
Solution Code
//Program to solve quadratic equation
#include<iostream.h>
#include<conio.h>
#include<math.h>
void main()
{
clrscr();
float a,b,c,d,r1,r2;
cout<<"Enter the value of a,b,cn";
cin>>a>>b>>c;
if(a==0)
{
cout<<"cannot be solve";
}
else
{
d=(b*b)-(4*a*c);
if(d>0)
{
r1=(-b+sqrt(d))/(2*a);
PREPARED BY
BIJENDER KUMAR Page

5. C++ PRACTICAL FILE
r2=(-b-sqrt(d))/(2*a);
cout<<"Roots are equal and
differentnroot1="<<r1<<"nroot2="<<r2;
}
else if(d==0)
{
r1=r2=-b/(2*a);
cout<<"Roots are real but samenroot1=root2="<<r1;
}
else
{
cout<<"Roots are imaginary";
}
}
getch();
}
Output
PREPARED BY
BIJENDER KUMAR Page

6. C++ PRACTICAL FILE
Q15. Program to find whether given number is even or
odd
Solution Code
//Program to check number is even or odd
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
intnum,res;
cout<<"Enter the numbern";
cin>>num;
res=num%2;
switch(res)
{
case 0:cout<<"Number is even";
break;
case 1:cout<<"Number is odd";
break;
default:cout<<"Invalid entry";
PREPARED BY
BIJENDER KUMAR Page

7. C++ PRACTICAL FILE
}
getch();
}
Output
PREPARED BY
BIJENDER KUMAR Page

8. C++ PRACTICAL FILE
Q17. Program to display arithmetic operations using
switch case
Solution Code
//Program for arithmetic operators using switch
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
inta,b,res;
charch;
cout<<"Enter the two numbersn";
cin>>a>>b;
cout<<"Enter the operation to perform +,-,*,/,%n";
cin>>ch;
switch(ch)
{
case '+':res=a+b;
cout<<res;
break;
PREPARED BY
BIJENDER KUMAR Page

9. C++ PRACTICAL FILE
case '-':res=a-b;
cout<<res;
break;
case '*':res=a*b;
cout<<res;
break;
case '/':res=a/b;
cout<<res;
break;
case '%':res=a%b;
cout<<res;
break;
default:cout<<"Wrong choice";
}
getch();
}
Output
PREPARED BY
BIJENDER KUMAR Page

10. C++ PRACTICAL FILE
Q18. To display first 10 natural no and their sum
Solution code
//Program to display first 10 natural numbers and their
sum
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int sum=0;
cout<<"First 10 natural number aren";
for(int i=1;i<=10;++i)
{
cout<<i<<"n";
sum=sum+i;
}
cout<<"Sum is"<<sum;
getch();
}
PREPARED BY
BIJENDER KUMAR Page

11. C++ PRACTICAL FILE
Output
Q19. Program to display the fibonacci series
Solution code
//Program to display the fibonacci series
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int a=0,b=1,sum=0,limit;
cout<<"Enter the limit";
cin>>limit;
cout<<a<<"n"<<b<<"n";
for(int i=0;i<=limit-2;++i)
{
sum=a+b;
cout<<sum<<"n";
a=b;
b=sum;
PREPARED BY
BIJENDER KUMAR Page

12. C++ PRACTICAL FILE
}
getch();
}
Output
PREPARED BY
BIJENDER KUMAR Page

13. C++ PRACTICAL FILE
Q20. Program to find the factorial of a number
Solution code
//Program to display the factorial of a number
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
inta,fact=1;
cout<<"Enter the value of a";
cin>>a;
for(int i=1;i<=a;++i)
{
fact=fact*i;
}
cout<<"The factorial of numberis"<<fact;
getch();
PREPARED BY
BIJENDER KUMAR Page

14. C++ PRACTICAL FILE
}
Output
Q21. Program to find whether given number is prime or
not
Solution Code
//Program to check number is prime or not
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
intnum,temp=0;
cout<<"Enter the numbern";
cin>>num;
for(int i=2;i<=num-1;++i)
{
if(num%i==0)
{
temp=1;
PREPARED BY
BIJENDER KUMAR Page

15. C++ PRACTICAL FILE
break;
}
}
if(temp==0)
{
cout<<"Prime Number";
}
else
{
cout<<"Not a prime number";
}
getch();
}
Output
PREPARED BY
BIJENDER KUMAR Page

16. C++ PRACTICAL FILE
Q21. (a) Program to find the sum of the series 1+2+3….n
Solution Code
//Program to find the sum of 1+2+3+..+n
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
intlimit,sum=0;
cout<<"Enter the limitn";
cin>>limit;
for(int i=1;i<=limit;++i)
{
sum=sum+i;
}
cout<<"Answer is"<<sum;
PREPARED BY
BIJENDER KUMAR Page

17. C++ PRACTICAL FILE
getch();
}
Output
Q21. (b) Program to find the sum of the series
1+1/1!+2/2!+3/3!....n/n!.
Solution Code
//Program to solve the series 1+1/1!+2/2!+3/3!+..+n/n!
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
floatlimit,fact=1,sum=1;
cout<<"Enter the limitn";
cin>>limit;
for(int i=1;i<=limit;++i)
{
for(int j=1;j<=limit;++j)
{
PREPARED BY
BIJENDER KUMAR Page

18. C++ PRACTICAL FILE
fact=fact*i;
}
sum=sum+i/fact;
fact=1;
}
cout<<"Sum of the series is"<<sum;
getch();
}
Output
PREPARED BY
BIJENDER KUMAR Page

19. C++ PRACTICAL FILE
Q22. (a) Program to generate the following pattern
*
**
***…
Solution Code
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
intch;
cout<<"Enter the number of rowsn";
cin>>ch;
for(int i=1;i<=ch;++i)
{
PREPARED BY
BIJENDER KUMAR Page

20. C++ PRACTICAL FILE
for(int j=1;j<=i;++j)
{
cout<<"*";
}
cout<<"n";
}
getch();
}
Output
PREPARED BY
BIJENDER KUMAR Page

21. C++ PRACTICAL FILE
Q24. (b) Program to generate the following pattern
1
12
123….
Solution Code
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
intch;
cout<<"Enter the number of rowsn";
cin>>ch;
for(int i=1;i<=ch;++i)
PREPARED BY
BIJENDER KUMAR Page

22. C++ PRACTICAL FILE
{
for(int j=1;j<=i;++j)
{
cout<<j;
}
cout<<"n";
}
getch();
}
Output
PREPARED BY
BIJENDER KUMAR Page

23. C++ PRACTICAL FILE
Q25. Program to show sum of 10 elements of array and
show the average
Solution Code
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
float a[10],sum=0,avg;
cout<<"Enter 10 elements of arrayn";
for(int i=0;i<10;++i)
{
cin>>a[i];
sum=sum+a[i];
}
PREPARED BY
BIJENDER KUMAR Page

24. C++ PRACTICAL FILE
avg=sum/10;
cout<<"Sum is"<<sum;
cout<<"nAverage is"<<avg;
getch();
}
Output
PREPARED BY
BIJENDER KUMAR Page

25. C++ PRACTICAL FILE
Q26.Program to perform linear search
Solution code
//Program to perform linear search
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
float a[10],limit,n,f=0,pos;
cout<<"Enter the limit";
cin>>limit;
for(int i=0;i<limit;++i)
{
cin>>a[i];
}
PREPARED BY
BIJENDER KUMAR Page

26. C++ PRACTICAL FILE
cout<<"Enter number you want to search";
cin>>n;
for(i=0;i<limit;++i)
{
if(n==a[i])
{
pos=i+1;
f=1;
}
break;
}
if(f==1)
{
cout<<"The number is at pos"<<pos;
}
else
{
cout<<"Number is not found";
}
getch();
}
Output
PREPARED BY
BIJENDER KUMAR Page

27. C++ PRACTICAL FILE
Q28. Program to find the maximum number in an array
Solution code
//Program to find the maximum number in an array
#include<iostream.h>
#include<conio.h>
void main()
{
int a[10],limit,largest;
cout<<"Enter the limit";
cin>>limit;
cout<<"Enter elements";
for(int i=0;i<limit;++i)
PREPARED BY
BIJENDER KUMAR Page

28. C++ PRACTICAL FILE
{
cin>>a[i];
}
largest=a[0];
for(i=1;i<limit;++i)
{
if(largest<a[i])
{
largest=a[i];
}
cout<<"Largest number in an array is"<<largest;
}
getch();
}
Output
PREPARED BY
BIJENDER KUMAR Page