#include <iostream>
using namespace std;
int main(int argc, char** argv)
{
float a,b,c,d,e,f,g,h,total_sum,total_sub,total_mul,total_div;
cout<<"input a:"<<endl;
cin>>a;
cout<<"input b:"<<endl;
cin>>b;
total_sum=a+b;
cout<<"total sum:"<<total_sum<<endl;
cout<<"input c:"<<endl;
cin>>c;
cout<<"input d:"<<endl;
cin>>d;
total_sub=c-d;
cout<<"total sub:"<<total_sub<<endl;
cout<<"input e:"<<endl;
cin>>e;
cout<<"input f:"<<endl;
cin>>f;
total_mul=e*d;
cout<<"total mul:"<<total_mul<<endl;
cout<<"input g:"<<endl;
cin>>g;
cout<<"input h:"<<endl;
cin>>h;
total_div=g/h;
cout<<"total div:"<<total_div<<endl;


return 0;
}

Go to and system cls

#include<iostream>
#include<windows.h>
#include<conio.h>
using namespace std;
int main()
{
aa:
system("cls");
int x,y,z;
char ch;
cout<<"please input number";
cout<<"\n x=";
cin>>x;
cout<<"\n y=";
cin>>y;
z=x+y+x/y+y-x;
cout<<z;
cout<<"press q to exit any to continue";
ch=getch();
if(ch!='q')
{
goto aa;
}

return 0;
}
Output of the above program
please input number
x=16
enter for following information
y=17
enter for following information
34

Cout<<" "; and cin>>; number

#include<iostream>
#include<conio.h>
using namespace std;
int main()
{
int x,y,z;
cout<<"please input number";
cout<<"\n x=";
cin>>x;
cout<<"\n y=";
cin>>y;
z=x+y+x/y+y-x;
cout<<z;
getch();

return 0;
}
output of the above program
please input number
x=12
enter the following information
y=21
enter the following information
42

Glossary:

A

Arithmetic logic unit (ALU)/n: A component of CPU which performs actual arithmetic or                                  mathematical calculations and logical operations.
ADSL /n : Asymmetric Digital subscriber line . A broadband communication technology designed for                  use ob telephone lines; it allow a single phone connection to  be used for both internet                          service and voice calls at the same time.
ADSl modem /n: used to connect one or more computer to an ADSL phone line.
adware /n: software devised to display advertisements some may include spyware .
alphanumeric keys /n : keys that arranged letters and number as on a typewriter.
                  amazon.com /n : popular online shopping site.
android .n / A robot that resembles a human. 
animations /n: image made up of a series of independent pictures put together in sequence to look                        like moving pictures.
applet /n: A small lava application usually designed to run automatically within a web page.
application software /n: programs that let you do specific tasks such as word processing database                         management or financial planning.
arcade game /n : A game played in a coin operated machine typically installed in pubs restaurants                     and amusement arcades.
ARPANet /n : Advanced research projects agency network developed in the early 70s by the US                         department of defence. This was the precursor to the internet.
Artificial intelligence /n: The study of methods by which a computer can simulate aspects of human                   intelligence.
ASCII code /n: A standard system for the binary representation of characters,ASCII,which stands for                  american standard code for information interchange, permits computers from different                           manufacturers to exchange data. 
B

back up /n: to copy files from one dusk to another.
backbone /n: lines or connections that form the major access  pathways within the internet.p
backup /n: A copy of data or software usually kept in case the original disk is damaged.
bandwidth /n  

Factorial of a Number in C++

Factorial of any number is the product of an integer and all the integers below it for example factorial of 4 is
4! = 4 * 3 * 2 * 1 = 24

Factorial program in C++ using for Loop

#include<iostream.h>
#include<conio.h>

void main()
{
int i, no, fact=1;
clrscr();
cout<<"Enter the any no. : ";
cin>>no;
for(i=1;i<=no;i++)
{
fact=fact*i;
}
cout<<"Factorial: "<<fact;
getch();
}