C++

INDEX(C++)

1. Write a program to find a factorial of a given number.

2. Write a program to get roots of quadratic equation.

3. Write a program to calculate compound interest using

Inline function.

4. Write a program to find out mean value using Friend function.

5. Write a program to find greatest of 3 no. using class& constructor.

6. Write a program to add 2 complex no. with the help of constructor.

7. Overload the area function to find area of triangle & circle.

8. Overload the following function to find volume of cube, cylinder

and rectangle.

9. Write a program to overload binary addition operator.

10. Write a program to overload unary prefix and postfix operator.

11. Write a program to find even and odd number and check whether

the no. is positive or negative

12. Write a program to swap values of 2 variables by passing pointer.

1.Write a program to find a factorial of a given number.

Program:-

#include<iiostream.h>

# include<conio.h>

void main( )

{

int f=1, n;

clrscr( );

cout<<“Enter a number”;

cin (n>0))

{

f=f*n;

n--;

}

cout<<“factorial is =%d”<<f;

getch( );

}

2. Write a program to get roots of quadratic equation. Program:-

#include<iiostream.h>

# include<conio.h>

void main( )

{

float a,b,c,d;

float r1,r2,r3;

clrscr( );

cout <<“Enter coefficient”;

cin>>a>>b>>c;

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

if (d==0)

{

cout <<“r1=r1=”<<(-b)/2*a)<<endl;

}

else if (d>0)

{

cout<<“roots are equal”;

r1 =sqrt(d);

r2=(-b+r1)/(2*a);

r3=(-b-r1)/(2*a);

cout<< “r2=” “<<r2<<”endl;

cout<< “r3=” “<<r3<<”endl;

}

else

{

cout<< “roots are complex\n”;

r2=(-b)/(2*a);

r3=sqrt(-d)/(2*a);

cout<< “real part=”<<r2<<endl;

cout<< “imaginary part=”<<r3;

cout<<endl;

getch();

}

3.Write a program to calculate compound interest using Inline function.

Program:-

#include<math.h>

inline float intersect ()

{

float ci,r;

int t, p;

clrscr ()

cout<< “Enter principle, rate and time”;

cin>>p>>r>>t;

ci=p*(power(ci+r/100),t);

return(ci);

}

void main()

{

floatc;

c=intersect();

cout<< “ compound interest=”<<c<<endl;

getch();

}

4.Write a program for input two no and check they are equal or not.

# inc lude< ios t ream.h>

#include<coni.o. h>

vo id ina in ( )

{

in t a ,b ;

c l r sc r ( ) ;

cout«"Enter the Numbers";

ci n">b;

i f (a—b)

c< n t :< - "Number . in % oqun l " ;

el Se

c.oij t •' "Numbers are Not 1 " ;

ge tch ( ) ;

}

Output of program:

Enter the Numbers

12

11

Numbers a re Not equa l

5. Write a program for fibonacai series using function.

#include<iostream.h>

#include<conio.h>

void febo (int. n) ;

void mai n ()

{

int n;

clrscr ();

cout<<"Give how many numbers to print... "<<"\n";

cin»n;

cout<<"Series are as follow..."<<\n";

febo (n);

getch();

}

void febo(int n)

{

int sum,i,f=0,s=1;

cout<<f<<"/t";

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

{

sum-f+s;

f=s;

s=sum;

cout<<sum<<"/t";

}

Output of program:

Give how many number to print ...

series are as follow.......

6.Write a program for input two any no and find out squire using inline function

#include< iostream.h^

#include<conio.h>

inl ine f loat" square ( f loat x)/ / fact ion Definit ion {

f loat y;

y=x*x;

return(y);

}

void main()

{

f loat n,a;

cout<< x xEnter the value";

cin»n;

a=square (n);

cout«"The square is "<<a;

getch();

}

Output of program:

Enter the value

5.2

The square is:27.04

7.Write a program for input two or and display addition subtruction and multiplication of no using class.

#include< iostream.h^

#include<conio.h>

Class sample / /Class sample

{

int x,y, add, subs, mult i ; / / variable declare

Public : void setdata () / / function declare

{

Count<<"Enter the number x and y' ;

Com>>x>>Y; //end of funct ion

}

void sum ()

}

add=x+y;

count<< "The sumis:" <<add;

}

void sub ()

Subs=x-y;

count<<" The substruct ion is: " <<subs;

}

void mult i ()

mult i y=x*x;

cout<< "The multiplication is:"«multi;

} };

void main ()

{

sample s1; //s1 object of sample

clrscr();

s1.setdata (); //take a input

s1.sum() ; //set a result

s1.subs ();

s1.multi () ;

getch ();}

Output of program:

Enter the number x and y

25

18

The sum is: 43

Tho substruction is: 7

The multiplication is: 450

8.Write a program for display no of object created using static variable.

#include<iostream.h>

#include<conio.h>

class test //class deceleration

{

int code;

static int count; //static member veriable public:

void setdata(void)

{

code = ++count;

}

void showcount(void)

{

cout<<"Object: number: }"<<code<<"/n;

}

Static void showcoum (void)

//static member function

{

count<<""count: "«count<<"/n"";

}};

int test :: count;

int main()

{

test t1,t2;

t1.setdata();

t2.setdata();

test :: showcount ()

//accessing static function

test t3;

t3.setdata();

test :: showcount() ;n

t1.showcode();

t2 . showcode () ;

t3. showcode

() ;

return ();

}

Output of program:

Count: 2

count: 3

Object number:1

Object number:2

Object number:3

9.Write a program to find greatest of 3 no. using class& constructor.

Program:-

#include<iiostream.h>

# include<conio.h>

Class greatest

{

Public:

Int a,b,c;

Public:

Greatest(intx,inty,intz)

{

A=x;

B=y;

C=z;

}

Void cal data()

{

If (a>b & & a>c)

{

cout <<a<< “is greater”;

}

else if(b>c)

{

cout<<b<< “is greater”;

}

else

{

cout<<c<< “is greater”;

}

}

};

void main()

{

greatest g(10,20,25);

g caldata();

getch();

}

10.Write a program to add 2 complex no. with the help Class and constructor.

Program:-

#include<iiostream.h>

# include<conio.h>

class complex

{

float x,y;

public:

complex(float a, float b0

{

x=a;

y=b;

}

complex()

}

{

friend complex sum (complex , complex);

friend void show (complex);

~ complex()

}

}

};

complex sum(complex c1, complex c2)

{

complex c3;

c3.x=c1.x+c2.x;

c3.y=c1.y+c2.y;

return(c3);

}

void show (complex c)

{

cout <<c.x<< “+i+”,<<c.y<< endl;

}

void main()

{

clrscr();

complex A(2.7,3.5) ;

complex B(1.6 );

complex c;

c=sum(A,B);

cout<< “A=”;

show (A);

cout<< “B=”;

show (B);

cout<< “c=”;

show(c);

}

getch();

}

11. Write a program to find out mean value using Friend function.

Program:-

#include<iiostream.h>

# include<conio.h>

Class sample

{

Int a;

Int b;

Public:

Void (set value() )

{

A=25;

B=40;

}

Friend float mean (sample s);

};

Float mean (sample s)

{

Return float (s.a+s.b/2.0);

}

Int main()

{

Int main(

{

Sample x;

x.set value();

cout << “mean value =”<<mean(x)<< “\n”;

return();

getch();

}

12. Overload the area function to find area of triangle & circle.

Program :-

#include<iiostream.h>

# include<conio.h>

float area (int);

float area (float, int);

int main(){clrscr();

cout<<area(8)<< “\n”;

cout<<area (3.5,3)<< “\n”;

return 0;

}

float area (int r)

{

return (3.14*r*r);

}

float area (float b, int b)

{

return(.5*b*h);

}

getch();

}

13.Overload the following function to find volume of cube, cylinder and rectangle.

Program:

#include<iiostream.h>

# include<conio.h>

int volume (int);

double volume( double,int)

long volume (long, int,int);

int main()

{

cout <<volume(0)<< “\n”;

cout <<volume(2.5, 8)<< “\n”;

cout<<volume(100l, 75, 15)<< “\n”;

return 0;

}

int volume (int s)

{

return(s*s*s);

}

double volume (double, inth)

{

return(3.14*r*r*h);

}

long volume(longl ,intb,inth)

{

return(l*b*h)

}

getch();

}