First Program in C++

In C++ we can write object oriented programs as well as structured programs.

In this tutorial we are writing only object orieted programs.In object oriented programming we have to follow the following steps:

1. Create class
2. Create data fields or variables
3. Define Member functions or functions
4. Create objects of the class
5. Use member functions of the class using objects

in object oriented programming.We need to create class first to find the solution of any problem.

//first oop program to display Hello Compuhelp
#include<iostream>
class First
{
public:
void message()
{
std::cout<<"Hello Compuhelp";
}
};//end of class
int main()
{
First first;//first is the object of class First
first.message();//calling member function
}//end of main

#include<iostream>
using namespace std;
class Student
{
char name[20];
int rollno;
float fee;
public:
void input()
{
cout<<"Enter name ";
cin>>name;
cout<<"Enter rollno ";
cin>>rollno;
cout<<"Enter fee ";
cin>>fee;
}
void display()
{
cout<<"\nName is "<<name;
cout<<"\nRollno is "<<rollno;
cout<<"\nEnter fee "<<fee;
}
};//end of class

int main()
{
Student st;
st.input();
st.display();
}//end of main