Prime number

Question

#include <iostream>
using namespace std;

int main() {

double n, i, j;

cout<<"Please enter a number"<<endl;
cin>>n;

for(i=2; i<n; i++)
{
if( n % i == 0)
cout<<"UnRishoni";
else
cout<<"Rishoni :)";
}
return 0;
}

Hi!
Someone know what is the problem in my code?
I try to check if the cin number is prime.

The error checker tell me that I used in double and double to make % .. What is that mean?

Thank you!

Answer 1

https://code.sololearn.com/cejTUaZf0Zm7/?ref=app

Answer 2

But using int is better as less space would be needed keeping that extra zeroes behind.

Answer 3

Thank you!!!