program to find prime number in c plus plus using object oriented concept

Code:


#include"pch.h"
#include<iostream>
#include<conio.h>

 using namespace std;

  class prime
  {
  public:
  void getdata(void);
  void showdata(void);
  void checkprime(void);
  private:
  int number, i, flag = 1;
  };


  void prime::getdata(void)
  {
  cout << "Enter number which is to check : ";
  cin >> number;

  }

  void prime::showdata(void)
  {
  if (flag)
  {
  cout << "Entered number is prime .";

  }
  else
  {

  cout << "Entered number is not prime";
  }

  }

  void prime::checkprime(void)
  {
  if (number == 2)
  {
  cout << "Entered number is prime ";
  }
  else if (number > 2)
  {
  for (i = 2; i <= (number / 2); i++) {
  if (number%i == 0) {
  flag = 0;
  break;
  }
  }
  }
  else
  {
  cout << " Enter valid positive number greater then 1 !!!";
  }
  }



int main() {

prime p;
p.getdata();
p.checkprime();
p.showdata();

return(0);
}

Output :

program to find prime number using procedural pattern in c plus plus

Question: Program to find prime number.


Solution:
#include"pch.h"
#include<iostream>
#include<conio.h>

  using namespace std;

int main() {
int n,i;
int flag = 1;
cout << "Enter number which is to check : ";
cin >> n;
if (n==2)
{
cout << "Entered number is prime ";
}
else if (n >2 ) 
{
for (i = 2; i <= (n/2); i++) {
if (n%i==0) {
flag = 0;
break;
}

}

if (flag)
{
cout << "Entered number is prime .";

}
else
{

cout << "Entered number is not prime";
}

}
else
{
cout << " Enter valid positive number greater then 1 !!!";
}

return(0);

}

Output:

C plus plus example

Question :  Write a program to create class "time"  with data members hours,minute and second ,then add two "time" objects by taking as argument and also returning object as an argument.

Solution :


#include"pch.h"
#include<iostream>
#include<conio.h>

class time
{
public:
time();
~time();
void setData();
void display();
time addTime( time);

private:
int hour, minute, second;

};

time::time()
{
hour = 0;
minute = 0;
second = 0;
}

time::~time()
{

}

void time::setData()
{
std::cout << "Enter Hour : ";
std::cin >> hour;
std::cout << "Enter Minute : ";
std::cin >> minute;
std::cout << "Enter Second : ";
std::cin >> second;
}

void time::display()
{
std::cout << "\nHour = " << hour << "\tMinute = " << minute << "\tSecond = " << second;
}

time time::addTime( time t2)
{
time temp;
temp.hour = hour + t2.hour;
temp.minute = minute + t2.minute;
temp.second = second + t2.second;
return time(temp);
}



int main() {

time t1, t2, t3;
t1.setData();
t2.setData();
t3 = t1.addTime(t2);
t3.display();
return(0);

}



Output: