prime number generator

#include <iostream>
using namespace std;

bool isprime(int );

int main() {
    cout << "Hello World! \n ";
    
    int n;
    cout << "Enter a number :  " << endl;
    cin >> n ;
   
    
    for(int i = 2 ; i <= n ; ++i)
    {
       if(isprime(i)) 
          cout << i << endl ;
    }
    
    return 0;
}

bool isprime(int number)
{
    for(int check = 2 ; check < number ; ++check)
    {
        if(number % check == 0)
        return false;
    }
    
    return true ;
}