C++ Program to calculate Prime Number Using Constructor

Prime Number Using Constructor


Write a C++ Program to calculate Prime Number Using Constructor. Here’s a Simple Program to calculate Prime Number Using Constructor in C++ Programming Language.


What is Class and Objects in C++?


  • Class is a user defined data type, which holds its own data members and member functions, which can be accessed and used by creating instance of that class.
  • The variables inside class definition are called as data members and the functions are called member functions.
  • Class is just a blue print, which declares and defines characteristics and behavior, namely data members and member functions respectively. And all objects of this class will share these characteristics and behavior.

  • Objects are instances of class, which holds the data variables declared in class and the member functions work on these class objects.
  • Each object has different data variables. Objects are initialized using special class functions called Constructors.

Below is the source code for C++ Program to calculate Prime Number Using Constructor which is successfully compiled and run on Windows System to produce desired output as shown below :


SOURCE CODE : :


/*  C++ Program to calculate Prime Number Using Constructor  */

#include<iostream>
using namespace std;

class prime
{
                int a,k,i;
              public:
              prime(int x)
              {
                            a=x;
              }
              void calculate()
              {
                 k=1;
                {
                     for(i=2;i<=a/2;i++)

       if(a%i==0)
                     {
                              k=0;
                              break;
                     }
                     else
                    {
                            k=1;
                  }
                }
              }

void show()
              {
                if(k==1)
                  cout<< "\nThe Number is prime Number.\n";
                else
                  cout<<"\nThe Number is Not prime.\n";
              }
};

int main()
{
    int a;
    cout<<"\nEnter any Number: ";
    cin>>a;
    prime obj(a);
    obj.calculate();
    obj.show();

    return 0;
}

OUTPUT : :


/*  C++ Program to calculate Prime Number Using Constructor  */

Enter any Number: 1231

The Number is prime Number.

Process returned 0

Above is the source code and output for C++ Program to calculate Prime Number Using Constructor which is successfully compiled and run on Windows System to produce desired output.

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