These simple programs written in programming language C + +

1-Program conducted by addition and multiplication and subtraction of two numbers:

#include <iostream.h>

#include <conio.h>

void main ()

{

int x, y;

cout << "x= ";

cin >> x;

cout << "y= ";

cin >> y;

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

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

cout << "x*y= " << x*y << endl;

if (y != 0)

cout << "x/y= " << (float)x/y << endl;

getch ();

}

2-Program conducted by addition and multiplication and subtraction of two numbers to the number of times specified by the user

#include <iostream.h>

#include <conio.h>

void main ()

{

float L, M;

char ch;

do

{

cout << "\nEnter L: ";

cin >> L;

cout << "Enter M: ";

cin >> M;

cout << "\nL+M= " << L+M;

cout << "\nL-M= " << L-M;

cout << "\nL*M= " << L*M;

if (M != 0)

cout << "\nL/M= " << L/M;

cout << " \n Do Again (y/n): ";

cin >> ch;

}

while (ch != 'n');

getch ();

}

3-A program that shows the letter E on the screen through a written letter x

#include <iostream.h>

#include <conio.h>

void main ( )

{

cout << "xxxxxxxx" << endl;

cout << "x" << endl;

cout << "x" << endl;

cout << "xxxxxxxx" << endl;

cout << "x" << endl;

cout << "x" << endl;

cout << "xxxxxxxx" << endl;

getch ();

}

4-This program will show the  squares  of numbers from 1 to 14:

#include <iostream.h>

#include <conio.h>

void main ( )

{

for (int i = 0; i < 15; i++)

cout << i * i << " ";

getch ();

}

5-This program calculates the area of ​​a circle in terms of the radius of the circle

#include <iostream.h>

#include <conio.h>

void main ( )

{

float R, Area;

float p1 = 3.14159 ;

cout << " Enter radius of circle: " ;

cin >> R;

Area = p1 * R * R;

cout << " Area is: " << Area << endl;

getch ();

}