Program Hitung Nilai Akhir Mahasiswa

//Muhammad Balya Khaidir
#include <iostream>
#include <iomanip>
#include <string.h>
using namespace std;

struct Data {
    int Tugas,N_Tugas,UTS,N_UTS,UAS,N_UAS,N_akhir,absen;
    float N_absen;
    string grade;
    long int nim;
    char nama[50];
    char gender;
    string gender1;
}f[50];
struct matakuliah {
    int kode_mtk[50];
    string nama_mtk[50];
}c;
struct dosen {
    int kode_dosen[50];
    string nama_dosen[50];
}d;
struct kelas {
    int kode_kelas[50];
    string kelas[50];
}e;

int main (){

    Data temp1;
    matakuliah temp2;
    dosen temp3;
    kelas temp4;

    int x,z,i,j,a,m;
    string pass,user;
    char y;

    //=========================================================================login screen
    awal2:
    cout<<"User Name : ";
    cin>>user;
    if(user=="Admin" || user=="admin"){
        cout<<"Password : ";
        cin>>pass;
        if(pass=="12345"){
            system("cls");
            cout<<"Selamat! Anda Telah Memasuki Home Admin."<<endl;

    awal:
    cout<<"Masukkan jumlah mahasiswa : ";
    cin>>x;
    if(x<=5){
        cout<<"================================"<<endl;
        goto inputan;

    }
    else{
        cout<<"Mahasiswa Kebanyakan Oe Nanti Pusing!"<<endl;
        cout<<"Max 5 Aja Oe!"<<endl<<endl;
        goto awal;
    }

    //=========================================================================input
    inputan:
    for(int z=1;z<=x;z++){
    cout<<"Masukkan NIM Mahasiswa ke "<<z<<" : ";
    cin>>f[z].nim;
    cout<<"Masukkan Nama Mahasiswa ke "<<z<<" : ";
    cin>>f[z].nama;
    cout<<"Masukkan Jenis Kelamin (L/P) : ";
    cin>>f[z].gender;
    if(f[z].gender=='l' || f[z].gender=='L'){
        f[z].gender1 = "Laki-Laki";
    }
    else if(f[z].gender=='p' || f[z].gender=='P'){
        f[z].gender1 = "Perempuan";
    }

    cout<<"Masukkan Kode Kelas untuk "<<x<<" Mahasiswa : ";
    cin>>e.kode_kelas[z];
    switch(e.kode_kelas[z]){
        case 106:
            e.kelas[z] = "03TPLE006";
        break;
        default:
            e.kelas[z] = "...";
    }

    cout<<"Masukkan Kode Dosen Untuk Kode Kelas "<<e.kode_kelas[z]<<" : ";
    cin>>d.kode_dosen[z];
    switch(d.kode_dosen[z]){
        case 15:
            d.nama_dosen[z] = "Niki Ratama";
            c.nama_mtk[z] = "Structure Data";
        break;
        default:
            d.nama_dosen[z] = "...";
            c.nama_mtk[z] = "...";
    }
    cout<<"========================================"<<endl;

    //========================================================================inputan nilai
    cout<<"Masukkan nilai Absensi "<<f[z].nama<<" : ";      //hitung nilai absensi
    do{
        cin>>f[z].absen;
    }while(f[z].absen>14);
    f[z].N_absen = (f[z].absen*10)/14;

 cout<<"Masukkan nilai Tugas "<<f[z].nama<<" : ";       //hitung nilai tugas
    cin>>f[z].Tugas;
    if(f[z].Tugas>100)
    {
        f[z].N_Tugas = 20;

        cout<<"Masukkan nilai UTS "<<f[z].nama<<" : ";      //hitung nilai UTS
        cin>>f[z].UTS;
        if(f[z].UTS>100)
        {
            f[z].N_UTS = 30;

            cout<<"Masukkan nilai UAS "<<f[z].nama<<" : ";      //hitung nilai UAS
            cin>>f[z].UAS;
            cout<<endl;
            if(f[z].UAS>100)
            {
                f[z].N_UAS = 40;
                f[z].N_akhir = f[z].N_absen+f[z].N_Tugas+f[z].N_UTS+f[z].N_UAS;
            }
            else
            {
                f[z].N_UAS = (f[z].UAS*40)/100;
                f[z].N_akhir = f[z].N_absen+f[z].N_Tugas+f[z].N_UTS+f[z].N_UAS;
            }
        }
        else
        {
            f[z].N_UTS = (f[z].UTS*30)/100;

            cout<<"Masukkan nilai UAS "<<f[z].nama<<" : ";      //hitung nilai UAS
            cin>>f[z].UAS;
            cout<<endl;
            if(f[z].UAS>100)
            {
                f[z].N_UAS = 40;
                f[z].N_akhir = f[z].N_absen+f[z].N_Tugas+f[z].N_UTS+f[z].N_UAS;
            }
            else
            {
                f[z].N_UAS = (f[z].UAS*40)/100;
                f[z].N_akhir = f[z].N_absen+f[z].N_Tugas+f[z].N_UTS+f[z].N_UAS;
            }
        }
    }
    else
    {
        f[z].N_Tugas = (f[z].Tugas*20)/100;                 //hitung nilai Tugas

        cout<<"Masukkan nilai UTS "<<f[z].nama<<" : ";      //hitung nilai UTS
        cin>>f[z].UTS;
        if(f[z].UTS>100)
        {
            f[z].N_UTS = 30;

            cout<<"Masukkan nilai UAS "<<f[z].nama<<" : ";      //hitung nilai UAS
            cin>>f[z].UAS;
            cout<<endl;
            if(f[z].UAS>100)
            {
                f[z].N_UAS = 40;
                f[z].N_akhir = f[z].N_absen+f[z].N_Tugas+f[z].N_UTS+f[z].N_UAS;
            }
            else
            {
                f[z].N_UAS = (f[z].UAS*40)/100;
                f[z].N_akhir = f[z].N_absen+f[z].N_Tugas+f[z].N_UTS+f[z].N_UAS;
            }
        }
        else
        {
            f[z].N_UTS = (f[z].UTS*30)/100;

            cout<<"Masukkan nilai UAS "<<f[z].nama<<" : ";      //hitung nilai UAS
            cin>>f[z].UAS;
            cout<<endl;
            if(f[z].UAS>100)
            {
                f[z].N_UAS = 40;
                f[z].N_akhir = f[z].N_absen+f[z].N_Tugas+f[z].N_UTS+f[z].N_UAS;
            }
            else
            {
                f[z].N_UAS = (f[z].UAS*40)/100;
                f[z].N_akhir = f[z].N_absen+f[z].N_Tugas+f[z].N_UTS+f[z].N_UAS;
            }
        }
    }

}
    //=======================================================================================output
    system("cls");
    cout<<"* Tabel Identitas Mahasiswa : "<<endl;
    cout<<"|============|=================================|===========|"<<endl;
    cout<<"|"<<setw(8)<<"NIM"<<setw(5)<<"|"<<setw(18)<<"NAMA"<<setw(16)<<"|"<<setw(8)<<"GENDER"<<setw(4)<<"|"<<endl;
    cout<<"|============|=================================|===========|"<<endl;
    for(int z=1;z<=x;z++){
    cout<<"|"<<setiosflags(ios::left)<<setw(12)<<f[z].nim<<"|"<<setiosflags(ios::left)<<setw(33)<<strupr(f[z].nama)<<"|"<<setiosflags(ios::left)<<setw(11)<<f[z].gender1<<"|"<<endl;
    }
    cout<<"|============|=================================|===========|"<<endl;
    cout<<"\n"<<endl;
    cout<<"* Tabel Jadwal Perkuliahan Mahasiswa : "<<endl;
    cout<<"|=================================|=========|============|===============|"<<endl;
    cout<<"|"<<setiosflags(ios::left)<<setw(33)<<"NAMA MAHASISWA"<<"|"<<setiosflags(ios::left)<<setw(9)<<"KELAS"<<"|"<<setiosflags(ios::left)<<setw(12)<<"NAMA DOSEN"<<"|"<<setiosflags(ios::left)<<setw(15)<<"NAMA MATKUL"<<"|"<<endl;
    cout<<"|=================================|=========|============|===============|"<<endl;
    //sorting bubble sort ascending
    for(i=0;i<=x;i++){
        for(m=1;m<x-i;m++){
            if(strcmp(f[m].nama, f[m+1].nama)>0){
                //tukar nama
                strcpy(temp1.nama,f[m].nama);
                strcpy(f[m].nama,f[m+1].nama);
                strcpy(f[m+1].nama,temp1.nama);
                //tukar kelas
                temp4.kelas[m]=e.kelas[m];
                e.kelas[m]=e.kelas[m+1];
                e.kelas[m+1]=temp4.kelas[m];
                //tukar nama dosen
                temp3.nama_dosen[m]=d.nama_dosen[m];
                d.nama_dosen[m]=d.nama_dosen[m+1];
                d.nama_dosen[m+1]=temp3.nama_dosen[m];
                //tukar nama matkul
                temp2.nama_mtk[m]=c.nama_mtk[m];
                c.nama_mtk[m]=c.nama_mtk[m+1];
                c.nama_mtk[m+1]=temp2.nama_mtk[m];
                //tukar nilai akhir
                temp1.N_akhir=f[m].N_akhir;
                f[m].N_akhir=f[m+1].N_akhir;
                f[m+1].N_akhir=temp1.N_akhir;
                //tukar grade
                temp1.grade=f[m].grade;
                f[m].grade=f[m+1].grade;
                f[m+1].grade=temp1.grade;
            }
        }
    }

    for(int z=1;z<=x;z++){
    cout<<"|"<<setiosflags(ios::left)<<setw(33)<<strupr(f[z].nama)<<"|"<<setiosflags(ios::left)<<setw(9)<<e.kelas[z]<<"|"<<setiosflags(ios::left)<<setw(12)<<d.nama_dosen[z]<<"|"<<setiosflags(ios::left)<<setw(15)<<c.nama_mtk[z]<<"|"<<endl;
    }
    cout<<"|=================================|=========|============|===============|"<<endl;
    cout<<"\n"<<endl;
    cout<<"* Tabel Nilai Mahasiswa : "<<endl;
    cout<<"|=================================|===============|============|=====|"<<endl;
    cout<<"|"<<setiosflags(ios::left)<<setw(33)<<"NAMA MAHASISWA"<<"|"<<setiosflags(ios::left)<<setw(15)<<"MATA KULIAH"<<"|"<<setiosflags(ios::left)<<setw(12)<<"NILAI AKHIR"<<"|"<<setiosflags(ios::left)<<setw(5)<<"GRADE"<<"|"<<endl;
    cout<<"|=================================|===============|============|=====|"<<endl;
    //sorting buble sort descending
    for(i=0;i<=x;i++){
        for(j=1;j<x-i;j++){
            if(f[j].N_akhir<f[j+1].N_akhir){
                //tukar nilai akhir
                temp1.N_akhir=f[j].N_akhir;
                f[j].N_akhir=f[j+1].N_akhir;
                f[j+1].N_akhir=temp1.N_akhir;
                //tukar grade
                temp1.grade=f[j].grade;
                f[j].grade=f[j+1].grade;
                f[j+1].grade=temp1.grade;
                //tukar nama
                strcpy(temp1.nama,f[j].nama);
                strcpy(f[j].nama,f[j+1].nama);
                strcpy(f[j+1].nama,temp1.nama);
                //tukar matkul
                temp2.nama_mtk[j]=c.nama_mtk[j];
                c.nama_mtk[j]=c.nama_mtk[j+1];
                c.nama_mtk[j+1]=temp2.nama_mtk[j];
            }
        }
    }
    for(int z=1;z<=x;z++){
    if(f[z].N_akhir>=80)
    {
        f[z].grade = "A";
    }
    else if(f[z].N_akhir>=70)
    {
        f[z].grade = "B";
    }
    else if(f[z].N_akhir>=60)
    {
        f[z].grade = "C";
    }
    else if(f[z].N_akhir>=55)
    {
        f[z].grade = "D";
    }
    else
    {
        f[z].grade = "E";
    }
    cout<<"|"<<setiosflags(ios::left)<<setw(33)<<strupr(f[z].nama)<<"|"<<setiosflags(ios::left)<<setw(15)<<c.nama_mtk[z]<<"|"<<setiosflags(ios::left)<<setw(12)<<f[z].N_akhir<<"|"<<setiosflags(ios::left)<<setw(5)<<f[z].grade<<"|"<<endl;
}
    cout<<"|=================================|===============|============|=====|"<<endl;
    cout<<"\n";
    cout<<"Ingin Mengulang Lagi?(Y/N)";
        cin>>y;
        if(y=='Y' || y=='y')
        {system("cls");
        goto awal;}
        else if(y=='N' || y=='n')
        {goto akhir;}
        akhir:
        exit(0);
    }
    else{
            cout<<"Password Salah! Silahkan Masukkan Password Yang Benar!"<<"\n"<<endl;
            goto awal2;
        }
        }

    else{
        cout<<"Anda Adalah Orang Asing! Masukkan User Yang Benar"<<"\n"<<endl;
        goto awal2;
    }

}