Class 11 Programs Practical File

COMPUTER SCIENCEPROGRAMS IN C++

2015-2016

NAME: AMISHA DALAL

PGT CS

1. Program to print “WELCOME IN C++”.

#include<iostream.h>

void main()

{

cout <<"Welcome in C++ Programming";

}

OUTPUT

Welcome in C++ Programming.

2. Program to find sum of two numbers.


void main()

{

int num1,num2,sum;

cout<<"Enter Number 1: ";

cin>>num1;

cout<<"Enter Number 2: ";

cin>>num2;

sum=num1+num2;

cout<<"Sum of numbers: "<<sum;

}

OUTPUT

Enter Number 1: 5

Enter Number 2: 6

Sum of numbers: 11

3. Program to find square of a number.


void main()

{

int num1,square;

cout<<"Enter number: ";

cin>>num1;

square=num1*num1;

cout<<"Square of number is: "<<square;

}

OUTPUT

Enter number: 5

Square of number is: 25

4. Program to check whether a number is greater than or less than other number.


#include<conio.h>

void main()

{

clrscr();

int num1,num2;

cout<<"Enter value for num 1: ”;

cin>>num1;

cout<<"Enter value for num 2: ";

cin>>num2;

if(num1>num2)

cout<<"Num1 is greater than num 2";

else

cout<<"Num1 is smaller than num 2";

}

OUTPUT

Enter value for num 1: 5

Enter value for num 2: 10

Num1 is smaller than num 2

5. Program to calculate percentage marks for three subjects.


void main()

{

float English, Maths, Science, Sum, Percentage;

cout<<"Enter marks of Subject ENGLISH, MATHS & SCIENCE: ";

cin>>English>>Maths>>Science;

Sum=English+Maths+Science;

Percentage=Sum*100/300;

cout<<"Percentage = "<<Percentage;

}

OUTPUT

Enter marks of Subject ENGLISH, MATHS & SCIENCE:

90

98

95

Percentage = 94.33333333

6. Program that reads temperature in Celsius and displays it in Fahrenheit.


void main()

{

int Celsius, Fahrenheit;

cout<<"Enter temperature in degree CELCIUS: ";

cin>>Celsius;

Fahrenheit=9*Celsius/5+32;

cout<<"Temperature in degree FAHRENHEIT: "<<Fahrenheit;

}

OUTPUT

Enter temperature in degree CELCIUS: 40

Temperature in degree FAHRENHEIT: 104

7. Program that reads radius of a circle and prints its area.


void main()

{

float radius,area;

cout<<"Enter Radius of circle: ";

cin>>radius;

area=radius*3.14*radius;

cout<<"Area of Circle: "<<area;

}

OUTPUT

Enter Radius of circle: 14

Area of Circle: 615.44

8. Program that enter value of x from user and prints Y = 2x and Z = 2x -1.


#include<conio.h>

void main()

{

clrscr();

int x,y,z;

cout<<"Enter x: ";

cin>>x;

y=2*x;

z=2*x-1;

cout<<" Y = "<<y<<"\n"<<" Z = "<<z;

}

OUTPUT

Enter x: 5

Y = 10

Z = 9

9. Program to convert a given number of days into years, weeks and days.


#include<conio.h>

void main()

{

clrscr();

int totaldays,years,weeks,days,rem1,rem2;

cout<<"Enter total number of days : ";

cin>>totaldays;

years=totaldays/365;

rem1=totaldays%365;

weeks=rem1/7;

rem2=rem1%7;

days=rem2;

cout<<"Years = "<<years<<"\tweeks = "<<weeks<<"\tdays = " <<days;

}

OUTPUT

Enter total number of days : 956

Years = 2 weeks = 32 days = 2

10. Program for swapping of two numbers using third number.


#include<conio.h>

void main()

{

clrscr();

int a, b, c;

cout<<"Enter a : ";

cin>>a;

cout<<"Enter b : ";

cin>>b;

c=a;

a=b;

b=c;

cout<<"\na= "<<a<<"\n"<<"b= "<<b;

}

OUTPUT

Enter a: 5

Enter b: 7

a= 7

b= 5

11. Program for swapping of two numbers without using third variable.


#include<conio.h>

void main()

{

clrscr();

int a,b;

cout<<"Enter a : ";

cin>>a;

cout<<"Enter b : ";

cin>>b;

a=a+b;

b=a-b;

a=a-b;

cout<<"Values after swapping: "<<"\na= "<<a<<"\nb= "<<b;

}

OUTPUT

Enter a: 4

Enter b: 9

Values after swapping:

a= 9

b= 4

12. Program to input three numbers and print the largest of three.


void main()

{

int x,y,z;

cout<<"Enter three variables : "<<"\n";

cin>>x>>y>>z;

if(x>y&&x>z)

cout<<"\n"<<x<<" is greater";

if(y>x&&y>z)

cout<<"\n"<<y<<" is greater";

if(z>x&&z>y)

cout<<"\n"<<z<<" is greater";

}

OUTPUT

Enter three variables :

5

9

3

9 is greatest

13. Program to check whether the entered number is odd or even.


#include<conio.h>

void main()

{

clrscr();

int num;

cout<<"Enter any number: “;

cin>>num;

if(num%2==0)

cout<<"Number is even";

else

cout<<"Number is odd";

}

OUTPUT

Enter any number: 5

Number is odd

Enter any number: 18

Number is even

14. Program to find Simple Interest and Compound Interest.


#include<conio.h>

void main()

{

clrscr();

int P,R,T;

float SI,CI;

cout<<"Enter values for P R T"<<"\n";

cin>>P>>R>>T;

SI=P*R*T/100;

CI=P*(1+R/100)^T;

cout<<"Simple interest= "<<SI<<"\n"<<"Compound Interest= "<<CI;

}

OUTPUT

Enter values for P R T

1000

5

3

Simple interest = 150

Compound Interest = 1003

15. Program to find area of a triangle.


#include<conio.h>

void main()

{

clrscr();

int b, h, area;

cout<<"Enter values of Base and Height of triangle"<<"\n";

cin>>b>>h;

area=b*h/2;

cout<<"Area of triangle: "<<area;

}

OUTPUT

Enter values of Base and Height of triangle

5

4

Area of triangle: 10

16. Program that seeds the name of user and number of unit and displays the electricity charge with name.The electricity board charges according to following data:

For first 100 units = 40p/unit

For next 200 units = 50p/unit

Beyond 300 units = 60p/unit

All the users are charged motor charge also which is Rs 50.


#include<stdio.h>

#include<conio.h>

void main()

{

clrscr();

char name[25];

int unit, charge;

cout<<"Enter your name: ";

gets(name);

cout<<"Enter total units: "<<“\n”;

cin>>unit;

if(unit<=100)

charge=100*40/100+50;

if(unit>100&&unit<=300)

charge=100*40/100+(unit-100)*50/100+50;

if(unit>300)

charge=100*40/100+200*50/100+(unit-300)*60/100+50;

puts(name);

cout<<"Total Electricity Charge: "<<charge;

}

OUTPUT

Enter your name: Alok Kumar

Enter total units: 285

Alok Kumar

Total Electricity Charge: 182

17. Program to enter marks in five subjects and calculate percentage. Display grade according to

following specifications. Percentage Grade

>90 A

<= 90 and>81 B

<= 80 and>71 C

<= 70 and>61 D

<= 60 and>51 E

<= 50 and>41 F

<=40 Fail


#include<stdio.h>

#include<conio.h>

void main()

{

clrscr();

char name[67], grade;

int eng, maths, cs, phy, chem, sum, percentage;

cout<<"Enter your name: ";

gets(name);

cout<<"Enter marks in 5 subjects"<<"\n";

cin>>eng>>maths>>cs>>phy>>chem;

sum=eng+maths+cs+phy+chem;

percentage=sum/5;

cout<<"\n"<<"\n";

puts(name);

cout<<"Percentage: "<< percentage <<'%';

if(percentage >90)

grade='A';

if(percentage <=90&& percentage >81)

grade='B';


grade='C';


grade='D';


grade='E';


grade='F';

if(percentage <=40)

grade='G';

cout<<"\n"<<"Grade: "<<grade;

}

OUTPUT

Enter your name: Alok Kumar

Enter marks in 5 subjects

93

97

95

90

99

Alok Kumar

Percentage: 94%

Grade: A

18. Program that accepts a character between A and J and prints next 4 characters.


#include<conio.h>

void main()

{

clrscr();

char ch;

cout<<"Enter character between A to J: ";

cin>>ch;

int num =ch;

cout<<char(num+1);

cout<<" "<<char(num+2);



}

OUTPUT

Enter character between A to J: F

G H I J

19. Program to input a student type (‘A’ or ‘B’), and for ‘A’ initialize the collage account with Rs 200 otherwise

initialize the hostel account with Rs 200.


void main()

{

char stu_type;

int coll_acc,hostel_acc;

cout<<"Enter student type: ";

cin>>stu_type;

if(stu_type=='A')

coll_acc=200;

cout<<“\nCollage account:”<<coll_acc;

if(stu_type=='B')

hostel_acc=200;

cout<<“\nHostel account:”<<hostel_acc;

}

OUTPUT

Enter student type: A

Collage account: 200

20. Program that print area for choice 1 and perimeter for choice 2 of a circle


void main()

{

char choice;

int radius, area, peri;

cout<<"Enter radius of circle: ";

cin>>radius;

cout<<"Enter 1 for area or 2 for perimeter: ";

cin>>choice;

area=22*radius*radius/7;

peri=2*22*radius/7;

if(choice=='1')

cout<<"Area: "<<area;

else

cout<<"Perimeter: "<<peri;

}

OUTPUT

Enter radius of circle: 7

Enter 1 for area or 2 for perimeter: 1

Area: 154

21. Program to find value of P if P= (w + x)/(y-z). The value of w, x, y, z are entered by user.


void main()

{

float w, x, y, z, P;

cout<<"Enter numbers w, x, y, z";

cin>>w>>x>>y>>z;

P= (w + x)/(y-z);

cout<<"\nP = (w + x)/(y-z) = "<<P;

}

OUTPUT

Enter numbers w, x, y, z

5

7

6

3

P = (w + x)/(y-z) = 4

22. Program which raise any number x to a positive power n.


#include<conio.h>

#include<math.h>

void main()

{

clrscr();

long double x,n,p;

cout<<"Enter any number x: ";

cin>>x;

cout<<"Enter value of n: ";

cin>>n;

p=pow(x,n);

cout<<"x raised to the power n is: "<<p;

}

OUTPUT

Enter any number x: 5

Enter value of n: 4

x raised to the power n is: 625

23. Program to calculate commission for the salesmen the commission is calculated according to following rates.

Sales Commission rate

30001 onwards 15%

22000 – 30000 10%

12001 – 22000 7%

5001 – 12000 3%

0 – 5000 0%


#include<conio.h>

void main()

{

clrscr();

float sales;

cout<<"Enter sales made by salesman: ";

cin>>sales;

if(sales>5000)

if(sales<12000)

if(sales<22000)

if(sales<30000)

cout<<"Commission = "<<sales*0.15;

else


else


else


else

cout<<"Commission = "<<sales*0;

}

OUTPUT

Enter sales made by salesman: 36548

Commission = 5482.2

24. Program to print whether the entered character is an uppercase or a lowercase character or a digit or any other

character. The ASCII codes are given below.

Characters ASCII Range

‘0’ – ‘9’ 48 – 57

‘A’ – ‘Z’ 65 – 90

‘a’ – ‘z’ 97 - 122


#include<conio.h>

void main()

{

clrscr();

char ch;

int num;

cout<<"Enter any Character: ";

cin>>ch;

num=ch;

if(num>=48)

if(num>=65)

if(num>=97&&num<123)

cout<<"\nThe entered character is a lower case alphabet";

else

cout<<"\nThe entered character is a upper case alphabet";

else

cout<<"\nThe entered character is a digit";

else

cout<<"\nThe entered character is any other character";

}

OUTPUT

Enter any Character: j

The entered character is a lower case alphabet

25. Program to print table of any number.


#include<conio.h>

void main()

{

clrscr();

int n,i;

cout<<"\nEnter any number :";

cin>>n;

for(i=1;i<=10;i++)

{

cout<<"\t";

cout<<n*i;

}

}

OUTPUT

Enter any number: 2

2 4 6 8 10 12 14 16 18 20

26. Program to print roots of a quadratic equation.


#include<conio.h>

#include<math.h>

void main()

{

clrscr();

float a,b,c,root1,root2,delta;

cout<<"Enter the values of a, b & c of the quadratic equation of the form \nax2+bx+c \n";

cin>>a>>b>>c;

if(a==0)

cout<<"The value of 'a' should not be zero \n Abording!!!!! \n";

else

{

delta =b*b-4*a*c;

if(delta>0)

{

root1=(-b+sqrt(delta))/(2*a);

root2=(-b-sqrt(delta))/(2*a);

cout<<"Roots are real and unequal";

cout<<"\n root1= "<<root1;

cout<<"\n root2= "<<root2;

}

else if(delta==0)

{

root1=root2=-b/(2*a);

cout<<"Roots are real and equal";

cout<<"\n Root1= "<<root1;

cout<<"\n Root2= "<<root2;

}

else

cout<<"roots are complex \n";

}

}

OUTPUTEnter the values of a, b & c of the quadratic equation of the form ax2+bx+c

1

-5

4

Roots are real and unequal

Root1= 1

Root2= 4

27. Program to find a number is prime or not.


#include<conio.h>

#include<process.h>

void main()

{

clrscr();

int n,i;

cout<<"Enter any number: ";

cin>>n;

for(i=2;i<=n-1;i++)

if(n%i==0)

{

cout<<"\nEntered number is NOT a PRIME NUMBER ";

exit(0);

}

cout<<"\nEntered number is a PRIME NUMBER ";

}

OUTPUT


Entered number is a PRIME NUMBER

28. Program that prints the following series

1 2 4 8 16 32 64 128


#include<math.h>

#include<conio.h>

void main()

{

clrscr();

int j,i;

for(i=0;i<=7;++i)

{

j=pow(2,i);

cout<<j<<' ';

}

}

OUTPUT

1 2 4 8 16 32 64 128

29. Program that prints first n natural numbers and prints their sum.


#include<conio.h>

void main()

{

clrscr();

int i, n, sum=0;

cout<<"Enter value of n: ";

cin>>n;

for(i=1;i<=n;i++)

{cout<<i<<' ';

sum+=i;

}

cout<<"\nsum = "<<sum;

}

OUTPUT

Enter value of n: 20

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Sum = 210

30. Program to print sum of even and odd natural numbers in first n natural numbers.


void main()

{

int n,i,sum1=0,sum2=0;

cout<<"Enter the number of numbers : ";

cin>>n;

for(i=1;i<=n;i++)

{if(i%2==0)

sum1+=i;

else

sum2+=i;

}

cout<<"\nSum of even numbers: "<<sum1;

cout<<"\nSum of odd numbers: "<<sum2;

}

OUTPUT

Enter the number of numbers: 10

Sum of even numbers: 30

Sum of odd numbers: 25

31. Program for generating the given output.


#include<conio.h>

void main()

{

clrscr();

int i,j;

for(i=1;i<=5;i++)

{

cout<<"\n";

for(j=1;j<=i;j++)

cout<<'*';

}

}

OUTPUT

*

**

***

****

*****



#include<conio.h>

void main()

{

clrscr();

int i,j;

for(i=1;i<=4;i++)

{

cout<<"\n";

for(j=1;j<=2*i-1;j++)

cout<<'*';

}

}

OUTPUT

*

***

*****

*******



#include<conio.h>

void main()

{

clrscr();

int i;

for(i=1;i<=5;++i)

{

cout<<"\n";

for(int j=1;j<=i;++j)

cout<<i;

}

}

OUTPUT

1

22

333

4444

55555



void main()

{

int i, j, k, n;

cout<<"Enter number of lines: ";

cin>>n;

for(i=1;i<=n;i++)

{

cout<<"\n";

for(j=1;j<=n-i;j++)

cout<<' ';

for(k=1;k<=i;k++)

cout<<'*';

}

}

OUTPUT

Enter number of lines: 3

*

**

***

35. Program to print factorial of a number.


#include<conio.h>

void main()

{

clrscr();

int i, n, facto=1;


cin>>n;

for(i=1;i<=n;i++)

facto*=i;

cout<<"\n"<<n<<" factorial = "<<facto;

}

OUTPUT

Enter any number: 5

5 factorial = 120



void main()

{

char ch;

int i=ch, j, n;


cin>>n;

for(i=65;i<=n+65;i++)

{

cout<<"\n";

for(j=65;j<=i;j++)

cout<<char(j);

}

}

OUTPUT


A

AB

ABC

ABCD

37. Program for generating the given output.#include<iostream.h>

void main()

{

int i, j, k, n;


cin>>n;

for(i=1;i<=n;i++)

{

cout<<"\n";

for(j=1;j<=i-1;j++)

cout<<‘ ‘;

for(k=n;k>=i;k--)

cout<<"& ";

}

}

OUTPUT


& & & &

& & &

& &

&

38. Program to check whether a number is palindrome or not.


#include<string.h>

void main()

{

int n, n1, n2=n, rev=0;


cin>>n;

while(n)

{n1=n%10;

rev=rev*10+n1;

n=n/10;

}

if(n2==rev)

cout<<"\nNumber is palindrome";

else

cout<<"\nNumber is not palindrome";

}

OUTPUT


Number is palindrome

39. Program to check whether entered character is an alphabet or not.


#include<ctype.h>

void main()

{

char ch;

cout<<"Enter character :";

cin>>ch;

if(isalpha(ch))

cout<<"It is an alphabet.";

else

cout<<"It is not an alphabet.";

}

OUTPUT

Enter character: a

It is an alphabet.

Enter character: %

It is not an alphabet.

40. Program to check whether the entered character is of uppercase or lowercase.


#include<ctype.h>

void main()

{ char ch;

cout<<"Enter character:";

cin>>ch;

if(isalpha(ch))

{ cout<<"It is an alphabet.\n";

if(isupper(ch))

cout<<"It is an upper case.";

else

cout<<"It is a lower case.";

}

else

cout<<"It is not an alphabet.";

}

OUTPUTEnter character: r

It is an alphabet.

It is a lower case.

41. Program to concatenate two strings.


#include<stdio.h>

#include<string.h>

void main()

{

char s1[10], s2[10];

cout<<"Enter string 1:";

gets(s1);

cout<<"Enter string 2:";

gets(s2);

cout<<strcat(s1,s2);

}

OUTPUTEnter string 1: GOOD

Enter string 2: LUCK

GOODLUCK

Enter string 1: WEL

Enter string 2: COME

WELCOME

42. Program to find out number of words present in a line.


#include<string.h>

void main()

{

int n=1;

char str[100];

cout<<"Enter line:";

cin.getline(str,100);

for(int i=1; str[i]!='\0'; i++)

{

if ( str[i-1]!=' ' && str[i]==' ')

n=n+1;

}

cout<< “\nNumber of words = ”<<n;

}

OUTPUT

Enter line: My name is Alok Kumar.

Number of words = 5

Enter line: Program to find out number of words present in a line.

Number of words = 11

43. Program to print a word by deleting 1 letter from end in each turn.


#include<string.h>

void main()

{ char str[25];

cout<<"Enter string:";


int len=strlen(str);

for(int i=len; i<=0; i--)

{ for(int j=0; j<=i; j++)

cout<<str[j];

cout<<“\n”;

}

}

OUTPUT

Enter string: HELLO

HELLO

HELL

HEL

HE

H

44. Program to check whether the given string is palindrome or not.


#include<string.h>

void main()

{ char str[20];

int len, i, f=1;



len=strlen(str);

for(i=0, len=len-1; i<=len/2; i++, len--)

{ if(str[i]!=str[len])

f=0;

break;

}

if(f==1)

cout<<"Entered string is palindrome.";

else

cout<<"Entered string is not a palindrome.";

}

OUTPUT

Enter string: RADAR

Entered string is palindrome.

45. Program to find whether a given character is present in a string or not and also find the position of character.


#include<conio.h>

#include<string.h>

void main()

{ clrscr();

char str[20], ch;

int i, f=0;



cout<<"Enter character:";

cin>>ch;

for(i=1; i<=len; i++)

{

if(str[i]==ch)

{

f=1;

break;

}

}

if(f==1)

cout<<“The given character is present in the string.”<<“\n The position of the character is:”<< i;

else

cout<<“The given character is not present in the string.”;

}

OUTPUT

Enter string: My name is Khan and I am not a terrorist.

Enter character: K

The given character is present in the string

The position of the character is: 12

Enter character: t

The given character is present in the string

The position of the character is: 32

46. Program to find cube of a number (using function).


int cube(int);

void main()

{

int a,c;

cout<<"Enter number: ";

cin>>a;

c=cube(a);

cout<<"Cube of the number: "<<c;

}

int cube(int b)

{

int n;

n=b*b*b;

return n;

}

OUTPUT

Enter number: 5

Cube of the number: 125

47. Program to print largest even and odd number from a list of numbers entered through keyboard. The list

terminates as soon as one enters zero (using function).


#include<conio.h>

void even_odd(int);

void main()

{

clrscr();

int n;

even_odd(n);

}

void even_odd(int n)

{

int maxeven=0, maxodd=0;

while(n)

{

cout<<"Enter number:";

cin>>n;

if(n%2==0)

{

if(n>maxeven)

maxeven=n;

}

else if(n%2==1)

{

if(n>maxodd)

maxodd=n;

}

else if(n==0)

break;

}

cout<<"Largest odd number:"<<maxodd<<"\n Largest even number:"<<maxeven;

}

OUTPUT

Enter number:56

8

9

7

15

18

Largest odd number: 15

Largest even number: 18

48. Program to calculate factorial of a number (using function).


void factorial(int);

void main()

{ int n;


cin>>n;

factorial(n);

}

void factorial(int n)

{ int fact=1;

int i;

for(i=1; i<=n; i++)

fact=fact*i;

cout<< “\nFactorial of ”<<n<<“ is ”<<fact;

}

OUTPUT

Enter number: 6

Factorial of 6 is 720

Enter number: 5

Factorial of 6 is 120

49. Program to find largest number of a list of no. entered through keyboard (using function).


void largest();

void main()

{ largest();

}

void largest()

{ char ans='y'; int n, large=0;

while(ans=='y')

{ cout<<"Enter number:";

cin>>n;

if(n>large)

large=n;

cout<<"You want to enter number?(y or n):";

cin>>ans;

}

cout<< “\n Largest number entered: ”<<large;

}

OUTPUT

Enter number: 5 6 8 45 68 26 65 35 79 65 -6 64 25 64 3 9 10

Largest number entered: 79

50. Program that inputs three numbers and find the greatest among them (using functions).


void greatest(int, int, int);

void main()

{ int max, d, e, f;

cout<<"Enter 3 number:";

cin>>d>>e>>f;

greatest(d, e, f);

}

void greatest(int d, int e, int f)

{ if(d>e && d>f)

cout<<"First number is greatest";

else if(e>d && e>f)

cout<<"Second number is greatest";

else if(f>d && f>e)

cout<<"Third number is greatest";

}

OUTPUT

Enter 3 number: 5

9

2

Second number is greatest

51. Program to find largest and smallest element in a vector.


void main()

{ int v[10], large, small, i;

cout<<"Enter the value in vector ";

for(i=0;i<10; i++)

cin>>v[i];

large=v[1];

small=v[1] ;

for (i=0;i<10;i++)

{ if(v[i]>large)

large=v[i];

else if(v[i]<small)

small=v[i];

}

cout<<"\n Largest element ="<<large;

cout<<"\n Smallest element= "<<small;

}

OUTPUTEnter the value in vector

5 6 8 4 3 4 9 5 1 2

Largest element = 9

Smallest element= 1

52. Program for swapping of two numbers (using function).


void swap(int,int);

void main()

{ int a,b;

cout<<"Enter num1: \nEnter num2:";

cin>>a>>b;

swap (a,b);

}

void swap(int c, int d)

{ int temp;

temp =c;

c=d;

d=temp;

cout<< “\nValues after swapping numbers.”

cout<< “\nNum1”<<c<<"\nNum2"<<d;

}

OUTPUTEnter num1: 9

Enter num2: 15

Value after swapping numbers.

Num1: 15

Num2: 9

53. Program to find sum of digits of a number (using function).


int sum(int);

void main()

{ int n,s;


cin>>n;

s=sum(n);

cout<< “\n Sum of digits :”<<s;

}

int sum(int n1)

{ int p=0;

while(n1)

{ p=p+(n1%10);

n1=n1/10;

}

return p;

}

OUTPUT

Enter number:356

Sum of digits : 14

54. Program to print all those elements of a matrix that are on and are on the right side of main diagonal.


void main()

{int arr[3][3];

cout<<"Enter matrix:";

for(int i=0;i<3;i++)

for(int j=0;j<3;j++)

cin>>arr[i][j];

for(i=0;i<3;i++)

{ cout<<"\n";


{ if(i<=j)

cout<<arr[i][j];

else

cout<<" ";

}}

}

OUTPUT

Enter matrix: 2 6 9

8 1 5

4 2 3

2 6 9

1 5

3

55. Program to print and convert all the elements of an array positive (using function).


void negative(int arr[],int);

void main()

{ int size=10, arr[size];

cout<<"Enter elements of an array:";

for(int i=0; i<size; i++)

cin>>arr[i];

negative(arr,size);

}

void negative(int arr1[], int size1)

{ for(int i=0; i<size1; i++)

{ if(arr1[i]<0)

arr1[i]=arr1[i]*-1;

}

for(i=0;i<size1; i++)

cout<<arr1[i]<<“\t”;

}

OUTPUT

Enter elements of an array:

1 2 -6 -8 5 -9 5 4 8 -9

1 2 6 8 5 9 5 4 8 9

56. Program to generate the given output.#include<iostream.h>

void main()

{ int arr1[5][5];

int arr[]={1,2,3,4,5};



arr1[i][j]=arr[j];

for(i=0; i<5; i++)

for(int j=0; j<5; j++)

{ if(i+j>4)

arr1[i][j]=0; }

for(i=0;i<5;i++)

{ cout<<"\n";


cout<<arr1[i][j]<<" ";

}

}

OUTPUT1 2 3 4 51 2 3 4 01 2 3 0 01 2 0 0 01 0 0 0 0

57. Program to display a 2D array in 1D array.#include<iostream.h>

void main()

{ int A[3][3], B[9];

int i,j,k=0;

cout<<"Enter Array A:";

for(i=0; i<3; i++)

for(j=0; j<3; j++)

cin>>A[i][j];

for(i=0; i<3; i++)

{ cout<<"\n";

for(j=0; j<4; j++)

cout<<A[i][j]<<" ";}

for(i=0; i<3; i++)

for(j=0; j<3; j++)

{ B[k]=A[i][j];

k++;}

for(k=0; k<9; k++)

cout<<B[k];

}

OUTPUTEnter Array A: 1 2 3

1 2 31 2 3

Array B: 1 2 3 1 2 3 1 2 3

58. Program to concatenate two arrays.#include<iostream.h>

void main()

{ int i, j, k;

int A[5], B[5], C[10];

cout<<"Enter array A:";

for(i=0; i<5; i++)

cin>>A[i];

cout<<"Enter array B:";

for(j=0;j<5;j++)

cin>>B[j];

for(i=0,k=0; i<5;k++, i++)

C[k]=A[i];

for(k=5, i=0; i<5; k++, i++)

C[k]=B[i];

cout<<"\nArray C:";

for(k=0;k<10;k++)

cout<<C[i]<<" ";

}

OUTPUTEnter array A: 0 1 2 3 4

Enter array B: 5 6 7 8 9

Array C: 0 1 2 3 4 5 6 7 8 9

59. Program to replace a number from array with 0 and take all 0s of the array to the left.


void main()

{

int arr[9], n, t, k;

cout<<"Enter array:";

for(int i=0; i<9; i++)

cin>>arr[i];


cin>>n;

for(i=0; i<9; i++)

{

if(arr[i]==n)

arr[i]=0;

}

for(i=0; i<9; i++)

cout<<arr[i]<<"\n";

cout<<"\n";

for(k=0;k<2; k++)

{

for(i=8; i>=0; i--)

{

if(arr[i]==0)

{

for(int j=i;j>0;j--)

{

t=arr[j];

arr[j]=arr[j-1];

arr[j-1]=t;

}

}

}

}

cout<< “Array after replacing ”<<n<<“: ”;

for(i=0; i<9; i++)

cout<<arr[i];

}

OUTPUT

Enter array: 6 5 4 6 9 5 1 5 8

Enter number: 5

Array after replacing ‘5’:

0 0 0 6 4 6 9 1 8

60. Program to calculate the sum of elements of the rows of matrix.


void main()

{ int A[3][3], sum;

cout<<"Enter matrix A:";


{ for(int j=0; j<3; j++)

cin>>A[i][j];

}

for(i=0; i<3; i++)

{ sum=0;


sum=sum+A[i][j];

cout<< “\nSum of row”<<i+1<< “ is ” <<sum<<"\n";

}

}

OUTPUTEnter matrix A: 1 2 3

4 5 6

7 8 9

Sum of row 1 is 6

Sum of row 2 is 15

Sum of row 3 is 24

61. Program to multiply two matrices.#include<iostream.h>

#include<conio.h>

void main()

{

int A[3][3], B[3][3], C[3][3];

cout<<"Enter matrix A:";


{


cin>>A[i][j];

}

cout<<"Enter matrix B:";

for(i=0; i<3; i++)

{


cin>>B[i][j];

}

cout<< “\nMatrix A × matrix B :”

for(i=0; i<3; i++)

{

cout<<"\n";


{

int sum=0;

for(int k=0; k<3; k++)

{

sum+=A[i][j]*B[k][j];

}

cout<<sum<<" ";

}

}

}

OUTPUTEnter matrix A: 1 2 1

2 1 2

1 2 1

Enter matrix B: 2 1 2

1 2 1

2 1 2

Matrix A × matrix B:

5 8 5

10 4 10

5 8 5

62. Program to delete duplicate elements of an array with 0 and take all 0 to right.


void main()

{ int A[10];

cout<<"Enter array:";

for(int i=0; i<10; i++)

cin>>A[i];

for(i=0; A[i]!='\0'; i++)

{ for(int j=i+1; A[j]!='\0'; j++)

{ if(A[i]==A[j])

{ for(int k=j; A[k]!='\0'; k++)

A[k]=A[k+1]; }

}}

for(i=0; A[i]!='\0'; i++)

{ if(A[i]==0)

A[i]='\0'; }

cout<< “\nNew array:”;

for(i=0; i<10; i++)

cout<<A[i]<<" ";

}

OUTPUTEnter array: 5 8 9 6 4 8 9 3 6 5

New array: 5 8 9 6 4 3 0 0 0 0

63. Program to calculate compound interest for 50 clients of an investment company.

Details (including costume name, code and date of starting, number of years, interest rate and total amount) are stored

in an array of structures.


#include<stdio.h>

#include<math.h>

#include<conio.h>

struct clients

{

char cname[20];

int ccode;

int cday;

int cmonth;

int cyear;

int irate;

int totalamount;

int tot_years;

};

clients c[50];

void main()

{

clrscr();

float ci[50];

for(int i=0; i<50; i++)

{

gets(c[i].cname);

cin>>c[i].ccode;

cin>>c[i].cday;

cin>>c[i].cmonth;

cin>>c[i].cyear;

cin>>c[i].tot_years;

cin>>c[i].irate;

cin>>c[i].totalamount;

}

for (i=0; i<50; i++)

{

float t,s;

t[i]=(1+c[i].irate*0,01);

s[i]=pow(t[i],c1[i].year;

ci[i]=c1[i].totalamount*s[i];

cout<<ci[i];

}

}

64. Program to store information of 10 employee and to display information of an employee depending

upon the employee number given.


#include<conio.h>

#include<stdio.h>

#include<process.h>

struct employee

{

int eno;

char ename[20];

char eaddress[20];

}e[10];

void main()

{

clrscr();

int i,n;

char ans='y';

for(i=0;i<10;i++)

{

cin>>e[i].eno;

gets(e[i].ename);

gets(e[i].eaddress);

do{

cout<<"enter employee no";

cin>>n;

if(n==e[i].eno)

{

cout<<e[i].eno;

puts(e[i].ename);

puts(e[i].eaddress);

}

cout<<"u want to proceed or not";

cin>>ans;

}

while(ans=='y');

}

}

65. Program to create an array containing details of 25 students (including Roll number, name, marks in three subjects) and print out a list of students who have failed in more than 1 subject. Assume 40%

marks as pass marks.#include<iostream.h>

#include<conio.h>

#include<stdio.h>

struct student

{ int rno;

char name[20];

int sub1;

int sub2;

int sub3;

}s[25];

void main()

{


{

cout<<"Enter student Roll number : ";

cin>>s[i].rno;

cout<<"Enter student name : ";

gets(s[i].name);

cout<<"Enter marks obtained in three subjects : ";

cin>>s[i].sub1>>s[i].sub2>>s[i].sub3;

}

cout<<"list of students failed in more than 1 subject";

int f=0;

for(i=0;i<25;i++)

{

if(s[i].sub1<=40)

f++;

if(s[i].sub2<=40)

f++;

if(s[i].sub3<=40)

f++;

if(f>1)

{

puts(s[i].name)

cout<<s[i].rno;

}

f=0;

}

}

Class 11 Programs Practical File

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Transcript of Class 11 Programs Practical File