prime

#include <iostream>
using namespace std;

bool cek(int i)
{
    if(i <= 1){
        return false;
    };
    for (int j = 2; j <= i/2; ++j) {
        if(i % j == 0){
            return false;
        };
    };
    return true;
}

int main() {
    int input, inc = 1;
    cout<<"Masukkan Nomor : ";
    cin>>input;
    if(input <= 0){//a3
        cout<<"Bilangan Tidak Valid";//ya
    }else{//tidak
        do{
            for (int i = 1; i <= input; i++) {
                inc++;
                if(cek(i)){
                    cout<<i<<" ";
                }else{
                    input++;
                };
            }
        }
        while(inc <= input);
        cout<<"\nBilangan diatas adalah bilangan prima";
    };
    return 0;
}