Area of Circle

1.     Area of Circle

//Area of Circle

#include<iostream.h>

#include<conio.h>

void main()

{

float r,a;

cout<<"Enter the radius of circle";

cin>>r;

a=3.14*r*r;

cout<<"Area of Circle";

cout<<a;

getch();

}

Area of Rectangle

1.     Area of Rectangle

//Area of Rectangle

#include<iostream.h>

#include<conio.h>

void main()

{

int l,b,a;

cout<<"Enter the length";

cin>>l;

cout<<"Enter the breadth";

cin>>b;

a=l*b;

cout<<"Area of Rectangle";

cout<<a;

getch();

}

OUTPUT:

Enter the length 9

Enter the breadth 8

Area of Rectangle 72

AREA PROGRAMS

1.     Area of triangle

//Area of Triangle

#include<iostream.h>

#include<conio.h>

void main()

{

clrscr();

int b,h;

float a;

cout<<"Enter the base of triangle";

cin>>b;

cout<<"Enter the height of triangle";

cin>>h;

a=0.5*b*h;

cout<<"Area of triangle";

cout<<a;

getch();

}

Multiplication of two numbers

1.     Multiplication of two numbers

// Multiplication of two numbers

#include<iostream.h>

#include<conio.h>

void main()

{

int a,b,c;

cout<<"Enter the value of a";

cin>>a;

cout<<"Enter the value of b";

cin>>b;

c=a*b;

cout<<"Multiplication of two numbers";

cout<<c;

getch();

}

OUTPUT:
Enter the value of a4

Enter the value of b5

Addition of two numbers20

Subtraction of two numbers

1.     2. Subtraction of two numbers

// Subtraction of two numbers

#include<iostream.h>

#include<conio.h>

void main()

{

int a,b,c;

cout<<"Enter the value of a";

cin>>a;

cout<<"Enter the value of b";

cin>>b;

c=a-b;

cout<<"Subtraction of two numbers";

cout<<c;

getch();

}

OUTPUT:
Enter the value of a6

Enter the value of b5

Addition of two numbers1

Simple Programs in C++

SIMPLE PROGRAMS

1.     Addition of two numbers

// Addition of two numbers

#include<iostream.h>

#include<conio.h>

void main()

{

int a,b,c;

cout<<"Enter the value of a: ";

cin>>a;

cout<<"Enter the value of b: ";

cin>>b;

c=a+b;

cout<<"Addition of two numbers: ";

cout<<c;

getch();

}

OUTPUT:
Enter the value of a: 4

Enter the value of b: 5

Addition of two numbers: 9