#include<iostream>

using namespace std;

int main()
{
 double uang;
 float idr,usd,jpy,rm;
 char ulang;
 do
 {

  cout<<"==============================\n";
  cout<<" KONVERSI MATA UANG\n";
  cout<<"==============================\n";
  cout<<"1. IDR-Rupiah\n";
  cout<<"2. USD-Dollar\n";
  cout<<"3. JPY-Yen\n";
  cout<<"4. RM-Ringgit\n";
  cout<<"Silakan Pilih Nomor Mata Uang: ";cin>>uang;
  switch(uang)
  {
   case 1:
    cout<<"==============================\n";
    cout<<"    Rupiah\n";
    cout<<"==============================\n";
    cout<<"Masukkan nominal Rupiah = ";cin>>idr;
    usd=idr/13100;
    cout<<"Besar kurs Rupiah ke Dollar adalah= "<<usd<<endl;
    jpy=idr/121;
    cout<<"Besar kurs Rupiah ke Yen adalah= "<<jpy<<endl;
    rm=idr/3400;
    cout<<"Besar kurs Rupiah ke Ringgit adalah= "<<rm<<endl;
    break;
   case 2:
    cout<<"==============================\n";
    cout<<"    Dollar\n";
    cout<<"==============================\n";
    cout<<"Masukkan nominal Dollar = ";cin>>usd;
    idr=usd*13100;
    cout<<"Besar kurs Dollar ke Rupiah adalah= "<<idr<<endl;
    jpy=usd*108;
    cout<<"Besar kurs Dollar ke Yen adalah= "<<jpy<<endl;
    rm=usd*4;
    cout<<"Besar kurs Dollar ke Ringgit adalah= "<<rm<<endl;
    break;
   case 3:
    cout<<"==============================\n";
    cout<<"   Yen\n";
    cout<<"==============================\n";
    cout<<"Masukkan nominal Yen= ";cin>>jpy;
    idr=jpy*121;
    cout<<"Besar kurs Yen ke Rupiah adalah= "<<idr<<endl;
    usd=jpy/108;
    cout<<"Besar kurs Yen ke Dollar adalah= "<<usd<<endl;
    rm=jpy/27;
    cout<<"Besar kurs Yen ke Ringgit adalah= "<<rm<<endl;
    break;
   case 4:
    cout<<"==============================\n";
    cout<<"    Ringgit\n";
    cout<<"==============================\n";
    cout<<"Masukkan nominal Ringgit = ";cin>>rm;
    idr=rm*3400;
    cout<<"Besar kurs Ringgit ke Rupiah adalah= "<<idr<<endl;
    usd=rm*0.25;
    cout<<"Besar kurs Ringgit ke Dollar adalah= "<<usd<<endl;
    jpy=rm*27;
    cout<<"Besar kurs Ringgit ke Yen adalah= "<<jpy<<endl;
  }
 cout<<"==============================\n";
 cout<<"==============================\n";
 cout<<"Apakah anda ingin mengulang y/n?: ";cin>>ulang;
 }while(ulang=='y');
}