Write a C++ program to check whether the given number is prime or not.

Write a C++ program to check whether the given number is prime or not.

Program Code: 
#include <iostream>
using namespace std;
int main()
{  
int number;
int i=2;  
bool nprime = true;
cout << "Enter a positive integer to check prime or not : ";  
cin >> number;
cout<<endl;
while(i <= number / 2)
{     
if(number % i == 0)     
{       
nprime = false;          
break;     
} 
i++;
}
if (nprime)   
{  
cout << "This entered number is a prime number : ";
cout<< number;
}
else 
{    
cout << "This entered number is not a prime number";
cout<< number;
}
return 0;
}

The program output is tested on www.jdoodle.com

Output:
Enter a positive integer to check prime or not : 7
This entered number is a prime number : 7

Thanks
Mukesh Rajput