Group of simple programs written in programming language C + +

1-This program calculates the square root of the entry number:

#include <iostream.h>

#include <math.h>

#include <conio.h>

void main ( )

{

float num, ans;

cout << " Enter a number: ";

cin >> num;

ans = sqrt(num) ;

cout << " square root is: " << ans << endl;

getch ();

}

2-This program is to demonstrate the increasing and decreasing:

#include <iostream.h>

#include <conio.h>

void main ()

{

int x = 10;

cout << " x = " << x << endl;

cout << "\n ++x = " << ++x << endl;

cout << " x++ = " << x++ << endl;

cout << "\n x = " << x << endl ;

cout << "\n --x = " << --x << endl;

cout << " x-- = " << x-- << endl;

cout << "\n x = " << x << endl ;

getch ();

}

3-This program is the product of the number is raised to create a specific exponent

#include <iostream.h>

#include <math.h>

#include <conio.h>

void main ()

{

int x, y, P ;

cout << " Enter a number: " ;

cin >> x ;

cout << " Enter a power : " ;

cin >> y ;

P = pow (x,y) ;

cout << " The result is : " << P << endl ;

getch ();

}

4-This program checks if the numbers were greater than 100

#include <iostream.h>

#include <conio.h>

void main ()

{

int x ;

L: cout << " Enter a number: ";

cin >> x;

if (x > 100)

cout << " Number is greater than 100\n";

else

cout << " Number is less than than 100\n";

goto L;

getch ();

}

5-This program checks whether the entered numbers even numbers or odd

#include <iostream.h>

#include <conio.h>

void main ()

{

int x, y;

L: cout << "\n Enter a number: " ;

cin >> x;

y=x%2;

if (y==0)

cout << " The number is even\n" << endl;

else

cout << " The number is odd\n" << endl;

goto L;

getch ();

}