Basic Programs

1.wap to enter the radius of a circle and print  the area……….

#include<iostream.h>

#include<conio.h>

void main()

{

clrscr();

cout<<"";

cout<<"submitted by gaurav gupta";

float a,b;

cout<<"enter the radius of a circle";

cin>>a;

b=(3.14*a*a);

cout<<"area="<<b;

getch();

}

2.wap to enter the radius of a circle and print the circumference………..

#include<iostream.h>

#include<conio.h>

void main()

{

clrscr();

cout<<" ";

cout<<" submitted by gaurav gupta";

float a,b;

cout<<" enter the radius of a circle";

cin>>a;

b=(2*3.14*a);

cout<<"circumference="<<b;

getch();

}

3.wap to enter the radius and height of the circle and print the volume of cylinder……..

#include<iostream.h>

#include<conio.h>

#include<math.h>

void main()

{

clrscr();

cout<<" ";

cout<<" submitted by gaurav gupta";

float a,b,v;

cout<<" enter the radius of cylinder  ";

cin>>a;

cout<<" enter he height of cylinder  ";

cin>>b;

v=(3.14*a*a*a*b)/3;

cout<<"volume of a cylinder is ="<<v;

getch();

}

4.wap o enter P,R,T and calculate the simple interest…

#include<iostream.h>

#include<conio.h>

#include<math.h>

void main()

{

clrscr();

cout<<" ";

cout<<" submitted by gaurav gupta";

float p,r,t,si;

cout<<" enter p ";

cin>>p;

cout<<" enter r ";

cin>>r;

cout<<" enter t";

cin>>t;

si=(p*r*t)/2;

cout<<"simple interest="<<si;

getch();

}

5.wap to enter he distance in km and convert it into m and cm……….

#include<iostream.h>

#include<conio.h>

#include<math.h>

void main()

{

clrscr();

cout<<" ";

cout<<" submitted by gaurav gupta";

float p,r,t,si;

cout<<" enter p ";

cin>>p;

cout<<" enter r ";

cin>>r;

cout<<" enter t";

cin>>t;

si=(p*r*t)/2;

cout<<"simple interest="<<si;

getch();

}

6.wap to enter the value and print the square and cube of number…..

#include<iostream.h>

#include<conio.h>

#include<math.h>

void main()

{

clrscr();

cout<<" ";

cout<<" submitted by gaurav gupta";

float a,b,c;

cout<<" enter he value of a ";

cin>>a;

b=(a*a);

c=(a*a*a);

cout<<"square="<<b<<"cube="<<c;

getch();

}

7.wap to enter a number and print he square root of the number…..

#include<iostream.h>

#include<conio.h>

#include<math.h>

void main()

{

cout<<" ";

cout<<"submitted by gaurav gupta";

float a,b;

cout<<"enter a";

cin>>a;

b=sqrt(a);

cout<<b;

getch();

}

8.wap to enter the sides of a triangle and calculate the area by heros formula………….

#include<iostream.h>

#include<conio.h>

#include<math.h>

void main()

{

cout<<" ";

cout<<" submitted by gaurav gupta";

float a,b,c,S,A;

cout<<" enter the value of a,b,c";

cin>>a>>b>>c;

S=(a+b+c)/2;

A=sqrt(S*(S-a)*(S-b)*(S-c));

cout<<"area="<<A;

getch();

}

9.wap to enter the bredth and height of a triangle and calculate the area……..

#include<iostream.h>

#include<conio.h>

#include<math.h>

void main()

{

clrscr();

cout<<" ";

cout<<" submitted by gaurav gupta";

float a,b,c;

cout<<" enter the bredth of triangle ";

cin>>a;

cout<<" enter the  of height of triangle ";

cin>>b;

c=(a*b)/2;

cout<<"area="<<c;

getch();

}

10.wap to enter a 3 digit number and print the sum………

#include<iostream.h>

#include<conio.h>

void main()

{

cout<<" ";

cout<<" submitted by gaurav gupta";

int a,b,sum=0;

cout<<" enter the value of a";

cin>>a;

b=a%10;

a=a/10;

sum=sum+b;

b=a%10;

a=b/10;

sum=sum+a+b;

cout<<sum;

getch();

}

11. wap to enter 3 digit number and print the reverse of the number….

#include<iostream.h>

#include<conio.h>

void main()

{

cout<<" ";

cout<<" submitted by gaurav gupta";

int a,b,rew=0;

cout<<" enter the value of a";

cin>>a;

b=a%10;

a=a/10;

rew=rew+b*100;

b=a%10;

a=b/10;

rew=rew+b*10+a;

cout<<rew;

getch();

}