Program pemecahan uang dalam digit

#include <iostream.h>
#include <conio.h>
main()
{
int nomor,ribu, ratus, puluh, sa;
semula:
cout << "Masukkan jumlah uang dalam 4 digit : ";
cin >> nomor;
if(nomor < 1000 | nomor > 9999) goto semula;
sa= nomor /1000;
puluh= nomor /100;
ratus= nomor /10;
ribu= nomor /1;
cout << nomor << " = "<< ribu << " ribuan" <<  " + " << ratus << " ratusan" <<  " + " << puluh <<
" puluhan" << " + " << sa << " satuan" << endl;
getch();
return 0;
}

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tahun kabisat yang d extrax ke jeliot

import jeliot.io.*;

public class Coba{
int a;
public int nilai(int a){
return a;
}
public void tahun(int a){
if(a%4==0){
System.out.println("tahun kabisat");}
else{
System.out.println("bukan tahun kabisat");}}}


public class Myclass{
    public static void main() {

        // Your algorithm goes here.
    Coba coba = new Coba();
    int z;
    z=Input.readInt();
    coba.nilai(z);
    coba.tahun(z);
    }
}

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PROGRAM KALKULATOR BAGIAN CPP

#include <cstdlib>
#include <iostream>
#include <cmath>
#include "kalkulator1.h"

int main(int argc, char *argv[])
{
    calculator O;
    char pilih;
    do{
    O.masuk();
    O.proses();
    cout<<"\n";
    cout<<"Anda ingin menghitung lagi ? ( y or n) ";
    cin>>pilih;
    cout<<"\n";
    }
    while(pilih=='Y' || pilih=='y');

    system("PAUSE");
    return EXIT_SUCCESS;

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PROGRAM KALKULATOR

#include <cstdlib>
#include <iostream>
#include <math.h>
using namespace std;
class calculator{
      public:
             calculator();
             void masuk();
             void proses();

      private:
              float a, b;
              float hasil;
              int x;
              };
 
calculator::calculator(){
                       
                          cout<<"\t                           WISNU DWI RAHARDIYAN\n";
                          cout<<"\t                                 10018175\n";
                          cout<<"\t                                     D\n";
cout<<"\n";
cout<<"\n";
                         }

void calculator::masuk(){
         cout<<"pilihan oprasi: \n";
         cout<<"\n";
         cout<<" 1.penjumlahan\n";
         cout<<" 2.pengurangan\n";
         cout<<" 3.perkalian\n";
         cout<<" 4.pembagian\n";
         cout<<" 5.pengkuadratan\n";
         cout<<" 6.akar kuadrat\n";
         cout<<" 7.sin\n";
         cout<<"\n";
         cout<<"Masukkan nomor oprasi : \n";
         cin>>x;
         }

void calculator::proses(){
     float hasil=0.0;
     switch(x){
               case 1 :
                    cout<<"\tpenjumlahan\n";
                    cout<<"\input ="; cin>>a; cout<<"\input ="; cin>>b;
                    hasil=a+b;
                    cout<<"\n";
                    cout<<"hasil = "<<hasil<<endl;
                    break;
               case 2 :
                    cout<<"pengurangan\n";
                    cout<<"\input ="; cin>>a; cout<<"\input ="; cin>>b;
                    hasil=a-b;
                    cout<<"\n";
                    cout<<"hasil = "<<hasil<<endl;
                    break;
               case 3 :
                    cout<<"perkalian\n";
                    cout<<"\input ="; cin>>a; cout<<"\input ="; cin>>b;
                    hasil=a*b;
                    cout<<"\n";
                    cout<<"hasil = "<<hasil<<endl;
                    break;
               case 4 :
                    cout<<"pembagian\n";
                    cout<<"\input ="; cin>>a; cout<<"\input ="; cin>>b;
                    hasil=a/b;
                    cout<<"\n";
                    cout<<"hasil = "<<hasil<<endl;
                    break;
               case 5 :
                    cout<<"pengkuadratan\n";
                    cout<<"\input ="; cin>>a;
                    hasil=a*a;
                    cout<<"\n";
                    cout<<"hasil = "<<hasil<<endl;
                    break;
               case 6 :
                    cout<<"akar kuadrat\n";
                    cout<<"\input ="; cin>>a;
                    hasil=sqrt(a);
                    cout<<"\n";
                    cout<<"hasil = "<<hasil<<endl;
                    break;
               case 7 :
                    cout<<"sin\n";
                    cout<<"\input ="; cin>>a;
                    hasil=sin(a);
                    cout<<"\n";
                    cout<<"hasil = "<<hasil<<endl;
                    break;
              
               default :
                       cout<<"inputannya salah mba/mas!\n";
                       cout<<"tidak ada pilihan\n\n";
                       calculator();
                       break;
                       }
                       }

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