Write a programme to display a message this is my first programme.?? 


#include<iostream.h>
#include<conio.h>
Void main() 
{
Clrscr();
Cout<<" This is my first programme ";
getch();
}



Note:-


When we write programmes in Windows. This is some useful functions (dos operating system) 


👉1.  <Iostream.h>  :- 


 This is the header file we  Used  in c++ programming . 
It means to stream the input and output operation that is performed in the programming. The term stream in intended to suggest that the characters are generated  or consumed, sequentially over time. 
                                                          In simple word the working procedure or function of cout, cin and other related input and output function is defined in this library if we want to use this is our programme we have to import or include this is our code or program. 

.  

2.👉<Conio.h>  :-


 This is a header file declares Several useful library functions for performing " Console input and output "from  a program. It is available for Windows only. 

3. 👉Void main()  :- 


After including the header file our next work is starting main we write the interas programme within main. The programme which is the within out side of the main does not work. 

Only variable declaration  and creation function etc. Are the few work which can we done outside of the main later we will learn. There must be one main in a programme and it should not be more than one. 


4.  👉Clrscr() ;   :-


 This is used to clear the screen  That is standard output device 


 

5.👉 Cout<<"     ";    :- 


 It is responsible for display in programme we can display any message, value of any variable, anything through it. 

Example:-                                           output:-
 a.  Cout<<" I like c++";                     I like c++
 b.   Cout<<"2+4";                               2+4


6.  👉getch() ;  :- 


 Read any character directly (   within any buffer) from standard input device. But it doesn't echo readed character (can't see on screen). 
                                                                   In simple words the working it is used to stop the output screen.  






When we write programmes in Windows. This the some useful function. 



1. Int  :-


int, sort for " Integer ", is  fundamental  variable type built into the compiler and used to define numeric variables holding whole numbers..... C, C++, C# and many other programming languages recognize int as a data type. 



2. Float  :- 

The float is a data type of computer,  that is composed  of a number that is not an integer, because it includes a fraction represented in decimal format.. 

3. Cin :- 


This is used to accept value from user  in variable

Syntax:-


   cin>>variable name

cin>>n1>>n2>>n3;

Example:-  int  m;
                   cin>>m;
                   int  p, c, m;
                   cin>>p>>c>>m;


    

our website:  https://codemasternisha.blogspot.com/
    
 1. Write a programme to accept a number from user and check it. 


#include<iostream.h>
#include<conio.h>
Void main () 
{
Clrscr () ;
Int  nm;
 Cout<<"please give a number ";
Cin>>nm;
Getch();
}


2.Write a programme to accept two numbers from user and display it. 

#include<iostream.h>
#include<conio.h>
Void main () 
{
Clrscr() ;
Int  num1, num2;
Cout<<" Enter two numbers ";
Cin>>num1>>num2;
Getch();
}


3.Write a programme to accept five decimal numbers and display it. 

#include<iostream.h>
#include<conio.h>
Void main () 
{
Clrscr() ;
Float n1, n2, n3, n4, n5;
Cout<<" Enter five numbers ";
Cin>>n1>>n2>>n3>>n4>>n5;
Cout<<n1<<n2<<n3<<n4<<n5;
Getch();
}

Our website: 

  😇 https://codemasternisha.blogspot.com/😇


Importants concept about C++ Programming...


👉  IF you want to know how to display any string or anything in C++ then   CLICK HERE
 
       👉 IF you want to know How to solve Complex type of mathematical Problem in C++ 

               Programming  CLICK HERE

   👉 IF you want to know How to calculate percentage  in C++ Programming  CLICK HERE

             

if you face any any problem or any issue about our website then fill the contact us page and write your issues in it ...

👇👇👇👇👇👇👇👇👇👇👇👇👇



                      KEEP SUPPORTING 👌 !!  KEEP LEARNING 📚 !!



                                                                    😇😇😇😇😇😇😇