CONTENTS
- What is C++?
- Applications of C++.
- Simple Program Features.
- Comments
- Output Operator
-Header Files
- Return Type of main( )
- More C++ Statements
- An example With Class
- Structure of C++ Program
What is C++?
- It is an object oriented programming.
- It is the super set of c.
- It has bottom-up approach.
- Applications:
Simple C++ program
- #include< iostream.h >
#include< conio.h >
int main( )
{
cout<<“c++ is better than c”<<endl;
getch( );
return 0;
}
Comments
- C++ introduced a new comment symbol
//(back slash).
- It is of 2 types:-
1. Single line comments
2. Multi line comments
Input & Output Operator
- The operator >> is called the extraction operator. It is
used for output.
- The operator << is known as insertion operator. It is
used for input .
Header Files
- <stdio.h>
- <iostream.h>
- <stdlib.h>
- <string.h>
- <time.h>
- <iomanip.h>
- <fstream>
Namespace
- All classes and functions are declared within
namespace.
- Using namespace specifies that the members
defined in std are used throughout
the program.
Return Type of main( )
- By default the return type of main( ) is integer.
- Therefore the return type of all functions
in c++ is int.
More C++ Statements
- Variables
- Cascading of I/O operator
Structure of C++ Program
*Include files
*Class declaration
*Member functions definition
*Main function program
References
- Book:-Object oriented programming with C++
-Author name:- E Balagurusamy
-Edition:- Second
-Chapter- Second
-Page no:- form 17-29
