C++ - BASIC

C++

1. C++ was one of the oldest language developed by Bjarne Stroustrup.


2. C++ is a High Level Programming Language.


3. C++ is easy to read and write.


4. C++ is a cross-platform language

Why should you learn C++?

1. Popular language
   
   C++ is considered as one of the old and popular language in the World.


2. Easy to learn for C++ and C++ programmers
   
   As the syntax and features of C++ is quite similar to C# and Java. It becomes easy for C# and Java programmers to learn C++.


3. Object Oriented Programming Language
   
   C++ is an Object Oriented Programming Language which provides all the features of Object Oriented Programming Language that gives a proper structure to your project.

First C++ Application

Example :

#include <iostream>
using namespace std;

int main() {
  cout << "Hello World!";
  return 0;
}

Output :

1. So, in the above code we are printing Hello World using the below statement,
   
   

   cout << "Hello World";

   
   
   The print statement is quite simple. It is called cout followed by <<. And that's all.


2. Then we have a line that says return 0.
   
   

   return 0;

   
   
   Well! For now we don't have to understand, what is return 0. You can simply write it.


3. The cout or print statement and the return 0 is inside something called as the main() method. The main() method is the entry point of a standalone C++ application.
   
   So, C++ executes the code written inside the main() method :
   
   

   int main() {
   	cout << "Hello World!";
   	return 0;
   }



4. On the top, we have two lines of code,
   
   

   #include 
   using namespace std;

   
   
   Once again, you don't have to bother about the above lines. You can just write it. It should be common in all C++ programmes.


5. And finally, all the statements in C++ must end with a semicolon ;.

Moral of the Story

#include <iostream>
using namespace std;

int main() {
	// OUR CODES SHOULD BE WRITTEN HERE.
return 0;
}