getline.ignore

#include <iostream>
#include <string>
using namespace std;

int main()
{
    string nama;
    string user = "iSeeAli";
    string pass = "212004";
    string input;
    int pkn, ipa, ips, mtk, bindo, rata2, ali, kode;

    cout << "Masukan Username : ";
    cin >> user;
    cin.ignore();
    cout << "Masukan Password : ";
    cin >> input;
    cin.ignore();
    cout << "" << endl;
    if (input == pass){
        cout << "Berhasil Login" << endl;
        goto ali;
    } else{
        cout << "Username atau Password Anda Salah" << endl;
        return 0;
    }

    ali:
    cout << "" << endl;
    cout << "Masukan Nama Pertama Siswa : ";
    getline(cin,nama);
    cout << "" << endl;
    cout << "Masukan Nilai PKN : ";
    cin >> pkn;
    cin.ignore();
    cout << "Masukan Nilai IPA : ";
    cin >> ipa;
    cin.ignore();
    cout << "Masukan Nilai IPS : ";
    cin >> ips;
    cin.ignore();
    cout << "Masukan Nilai Matematika : ";
    cin >> mtk;
    cin.ignore();
    cout << "Masukan Nilai Bahasa Indonesia : " ;
    cin >> bindo;
    cin.ignore();
    cout << "" << endl;

    rata2 = pkn+ipa+ips+mtk+bindo;
    rata2 = rata2/5;
    cout << "Nilai Rata Rata " <<nama<<" "<< "Adalah : " << rata2 << endl;
    if(rata2 <= 70){
    cout << "STATUS : TIDAK LULUS" << endl;
    }else if(rata2 <=80){
    cout << "STATUS : CUKUP BAIK" << endl;
    }else if(rata2 <=100){
    cout << "STATUS : BAIK" << endl;
    }
    goto ali;
    return 0;
}