kalkulator sederhana lp3i samsul bahri

#include <iostream.h>

#include <conio.h>

#include <stdlib.h>

#include <ctype.h>

void main (){

int x,y,hasil,t;

char pilihan,n;

char out='o';

                                do{

      clrscr();

      cout<<"1.Penjumlahan\n";

      cout<<"2.Pengurangan\n";

      cout<<"3.Pembagian\n";

      cout<<"4.Perkalian\n";

      cout<<"5.Exit.\n";

      cout<<"Masukkan Pilihan Anda  ="; cin>>pilihan;

                                switch (pilihan){

                case '1':

               clrscr();

                                                cout<<"Masukkan Angka =";cin>>x;

                        cout<<"Maskkan Angka =";cin>>y;

                        hasil= x + y;

                        cout<<"Jawabannya Adalah ="<<x<<"+"<<y<<" = "<<hasil;

                        break;

                case '2':

               clrscr();

                                                cout<<"Masukkan Angka =";cin>>x;

                        cout<<"Masukkan Angka =";cin>>y;

                        hasil= x - y;

                        cout<<"Jawabannya Adalah ="<<x<<" - "<<y<<" = "<<hasil;

                        break;

               case '3':

               clrscr();

                                                cout<<"Masukkan Angka =";cin>>x;

                        cout<<"Masukkan Angka =";cin>>y;

                        hasil= x / y;

                        cout<<"Jawabannya Adalah ="<<x<<" / "<<y<<" = "<<hasil;

                        break;

               case '4':

               clrscr();

                                                cout<<"Masukkan Angka =";cin>>x;

                        cout<<"Masukkan Angka =";cin>>y;

                        hasil= x * y;

                        cout<<"Jawabannya Adalah ="<<x<<" x "<<y<<" = "<<hasil;

                        break;

               case '5':

               clrscr();

                                                cout<<"Terima kasih.......... \n";

                        cout<<"Nice to meet you  ,Untuk Keluar Tekan Tombol [t] =";

                        cin>>t;

                        if(toupper(out)!='o')

                        _exit(0);

                        break;

}

getch();

} while (pilihan !=5);

}