TUBES BANGSAT

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <conio.h>

struct{
    char nama[15];
    char pass[15];
}data[100],login,regi,admin;

struct bus{
    char asal[20];
    char tujuan[20];
    int harga;
}jadwal[100];

FILE *Userdata;

void bersih();
void regis();

int main()
{
    int pilihan,sukses;
    MenuAwal:
        bersih();
        printf("\t\t=================\n");
        printf("\t\t*    PITIBUS    *\n");
        printf("\t\t=================\n");
        printf("\n");
        printf("1. Login\n");
        printf("2. Register\n");
        printf("3. Login As Admin\n");
        printf("4. Exit\n");
        printf("\nMasukkan pilihan Anda: ");
    scanf("%d",&pilihan);
    bersih();
    switch(pilihan){
    case 1:
        Login:
        masuk(&sukses);
        if(sukses==1)
            goto MainMenu;
        else{
            printf("TEKAN Y UNTUK LOGIN KEMBALI\n");
            if((getch()=='y')||(getch()=='Y'))
                goto Login;
            else goto MenuAwal;
        }
        break;
    case 2:
        regis();
        goto MenuAwal;
        break;
    case 4:
        return 0;
        break;
    }
    MainMenu:
        bersih();
        printf("Main Menu\n");
    return 0;
}

void bersih()
{
    system("cls");
}

void regis()
{
    char c,cek_nama[20],cek_pass[20];
    int z=0;
    daftar:
        bersih();
        Userdata=fopen("Data.txt","a+");
        printf("\t\t==============\n");
        printf("\t\t* REGISTRASI *\n");
        printf("\t\t==============\n");
        printf("\n\n");
        printf("MASUKKAN USERNAME: ");
        scanf("%s",regi.nama);
        while(!feof(Userdata)){
            fscanf(Userdata,"%s %s\n",cek_nama,cek_pass);
            if(strcmp(cek_nama,regi.nama)==0){
                printf("\t\tUSERNAME TIDAK TERSEDIA\n");
                printf("\t\tTEKAN Y UNTUN MENCOBA LAGI\n");
                if((getch()=='Y')||(getch()=='y'))
                    goto daftar;
            }
        }
    printf("MASUKKAN PASSWORD: ");
    while (z<=15){
      regi.pass[z]=getch();
      c=regi.pass[z];
      if(c==13) break;
      else printf("*");
      z++;
    }
    fprintf(Userdata,"%s %s\n",regi.nama,regi.pass);
    fclose(Userdata);
    printf("\n");
    printf("\t\tREGISTRASI SUKSES\n");
    system("pause");
}

void masuk(int *m)
{
    char c,cek_nama[15],cek_pass[15];
    int z=0;
    *m=0;
    Masuk:
    bersih();
    Userdata=fopen("Data.txt","r+");
    printf("\t\t===============\n");
    printf("\t\t*    LOGIN    *\n");
    printf("\t\t===============\n");
    printf("\n\n");
    printf("MASUKKAN USERNAME: ");
    scanf("%s",login.nama);
    printf("MASUKKAN PASSWORD: ");
    while((c=getch())!=13){
        login.pass[z++]=c;
        printf("%c",'*');
    }
    login.pass[z]='\0';
    while(!feof(Userdata)){
        fscanf(Userdata,"%s %s\n",cek_nama,cek_pass);
        if((strcmp(cek_nama,login.nama)==0)&&(strcmp(login.pass,cek_pass)==0)){
            bersih();
            printf("LOGIN SUKSES\n");
            system("pause");
            *m=1;
            goto keluar;
        }else if((strcmp(cek_nama,login.nama)!=0)||(strcmp(login.pass,cek_pass)!=0)){
            printf("\nUSERNAME ATAU PASSWORD SALAH\n");
            *m=0;
            goto keluar;
        }
    }
    keluar:
        fclose(Userdata);
}