C++ cout

                                              C++ cout

Cout: Display Output to user using Screen (Monitor)  : 

In c++ insertion operator is used to display value to the user. They value may be some message in the from of string or variable.

Important Point - 

" cout is a variable of type ostream.cin is a variable of type istream. "

Syntax : Dispaly Value to User 

cout << variable ;

Explanation : Insertion Operator

• Include <iostream.h>header file to use cin.

#include <iostream.h>//traditional c++

or 

#include<iostream>//ANSI Standard

using namespace std;

• cout is used for dispalying data on the screen.

• The operator <<called as insertion operator or put to operator.

• The Insertion operator can be overloaded.

• Insertion operator is similar to the printf() operation in C.

• cout is the object of ostream class.

• Data flow direction is from variable to output device.

• We can still use printf () for displaying an output.

• Multipal output can be display using cout.

Live Example: Displaying Output on Screen: 

#include<iostream.h>

using namespace std;

int main ()

{

    int number1;

    int number2;

    cout<<"Enter First Number:";

    /* Display the message to tell the 

        user to do appropriate action */

    cin>>number1;

    cin>>number2;

    cout<<"Addition  : ";

    cout<<number1+number2; //Dispaly Result

    return 0;

}