4.1
#include <iostream>
using namespace std;
/* run this program using the console pauser or add your own getch, system("pause") or input loop */
class Banding{
friend istream&operator>>(istream&,Banding&);
public:
Banding(){};
void bandingkan(){
if(A>B)
cout<<"Bilangan terbesar = "<<A;
else
cout<<"Bilangan terbesar = "<<B;
}
private:
int A,B;
};
istream& operator>>(istream&in, Banding& bilangan){
cout<<"Bilangan Pertama =";
in>>bilangan.A;
cout<<"Bilangan Kedua = ";
in>>bilangan.B;
return in;
};
int main(int argc, char** argv) {
Banding bilangan;
cin>>bilangan;
bilangan.bandingkan();
return 0;
}
4.2
#include <iostream>
using namespace std;
/* run this program using the console pauser or add your own getch, system("pause") or input loop */
class Banding{
friend istream& operator>>(istream&,Banding&);
public:
Banding(){};
void bandingkan(){
if((x>y)&&(x>z))
cout<<"Bilangan terbesar = "<<x;
else if((y>x)&&(y>z))
cout<<"Bilangan terbesar = "<<y;
else
cout<<"Bilangan terbesar = "<<z;
}
private:
int x,y,z;
};
istream& operator>>(istream& in, Banding& bilangan){
cout<<"Bilangan pertama = ";
in>>bilangan.x;
cout<<"Bilangan kedua = ";
in>>bilangan.y;
cout<<"Bilangan ketiga = ";
in>>bilangan.z;
return in;
};
int main(int argc, char** argv) {
Banding bilangan;
cin>>bilangan;
bilangan.bandingkan();
return 0;
}
4.2 b
#include <iostream>
using namespace std;
class Banding{
friend istream& operator>>(istream&, Banding&);
public:
Banding(){};
void bandingkan(){
int maks = x;
if (y>maks)maks=y;
if (z>maks)maks=z;
cout<<"Bilangan terbesar = "<<maks;
}
private:
int x,y,z;};
istream& operator>>(istream&in,Banding&bilangan){
cout<<"Bilangan pertama = ";
in>>bilangan.x;
cout<<"Bilangan kedua = ";
in>>bilangan.y;
cout<<"Biangan ketiga = ";
in>>bilangan.z;
return in;
};
/* run this program using the console pauser or add your own getch, system("pause") or input loop */
int main(int argc, char** argv) {
Banding bilangan;
cin>>bilangan;
bilangan.bandingkan();
}
4.3
#include <iostream>
#include <math.h>
#include <conio.h>
using namespace std;
/* run this program using the console pauser or add your own getch, system("pause") or input loop */
class Akar{
friend ostream& operator<<(ostream&,Akar&);
friend istream& operator>>(istream&, Akar&);
public:
Akar();
int disk(){return B*B-4*A*C;}
float akar1(){return(-B+sqrt(disk()))/(2*A);}
float akar2(){return(-B-sqrt(disk()))/(2*A);}
void hitung_akar();
void cetak_disk(){cout<<"diskriminan = "<<disk()<<endl;}
void cetak_akar(){
cout<<"x1 = "<<akar1()<<endl;
cout<<"x2 = "<<akar2()<<endl;
}
private:
int A,B,C;
float x1,x2;
};
ostream& operator<<(ostream&out,Akar& keluaran){
keluaran.cetak_disk();
if(keluaran.disk()>=0)keluaran.cetak_akar();
else out<<"Akar imajiner";
return out;
}
istream& operator>>(istream&in,Akar& masukan){
cout<<"Koefisien pangkat 2 = ";in>>masukan.A;
cout<<"Koefisien pangkat 1 = ";in>>masukan.B;
cout<<"Koefisien pangkat 0 = ";in>>masukan.C;
return in;
}
Akar::Akar(){
cout<<"Menghitung akar persamaan kuadrat\n";
}
void Akar::hitung_akar(){
if(A==0){
cout<<"Bukan pers.kuadrat.\n";
cout<<"Harga akar = "<<-C/B;
}else{
if(disk()>0){
x1=akar1();
x2=akar2();
}else if(disk()==0){
x1=akar1();
x2=x1;
}
}
}
int main(int argc, char** argv) {
Akar kasus;
cin>>kasus;
kasus.hitung_akar();
cout<<kasus;
return 0;
}
4.4
#include <iostream>
using namespace std;
/* run this program using the console pauser or add your own getch, system("pause") or input loop */
class Nilai{
friend ostream&operator<<(ostream&,Nilai&);
friend istream&operator>>(istream&,Nilai&);
public:
Nilai(){};
void konversikan(){
if((nilai>0)&&(nilai<=20))
nilai_huruf='E';
else if ((nilai>20)&&(nilai<=40))
nilai_huruf='D';
else if((nilai>40)&&(nilai<=60))
nilai_huruf='C';
else if((nilai>60)&&(nilai<=80))
nilai_huruf='B';
else
nilai_huruf='A';
}
private:
int nilai;
char nilai_huruf;
};
istream&operator>>(istream&in, Nilai& masukan){
cout<<"Masukkan nilai angka = ";
in>>masukan.nilai;
return in;
};
ostream&operator<<(ostream&out,Nilai&keluaran){
out<<"Nilai angka = "<<keluaran.nilai<<endl;
out<<"Nilai huruf = "<<keluaran.nilai_huruf;
}
int main(int argc, char** argv) {
Nilai angka;
cin>>angka;
angka.konversikan();
cout<<angka;
return 0;
}
4.5
#include <iostream>
using namespace std;
/* run this program using the console pauser or add your own getch, system("pause") or input loop */
class Kalender{
friend ostream&operator<<(ostream&,Kalender&);
friend istream&operator>>(istream&,Kalender&);
public:
Kalender(){};
void adalah();
private:
int hari_ke;
char*hari;
};
void Kalender::adalah(){
switch (hari_ke){
case 1: hari = "Senin";break;
case 2: hari = "Selasa";break;
case 3: hari = "Rabu";break;
case 4: hari = "Kamis";break;
case 5: hari = "Jumat";break;
case 6: hari = "Sabtu";break;
default : hari = "Minggu";break;
}
}
istream&operator>>(istream&in,Kalender&masukan){
cout<<"Masukkan hari ke-";
in>>masukan.hari_ke;
return in;
}
ostream&operator<<(ostream&out,Kalender&keluaran){
out<<"Hari ke-"<<keluaran.hari_ke<<" adalah "<<keluaran.hari<<endl;
return out;
}
int main(int argc, char** argv) {
Kalender tanggal;
cin>>tanggal;
tanggal.adalah();
cout<<tanggal;
return 0;
}
latihan
1.
#include <iostream>
#include <conio.h>
using namespace std;
class Banding {
friend istream& operator>>(istream&, Banding&);
public:
Banding() {};
void bandingkan() {
int maks = x;
if (y > maks) maks = y;
if (z > maks) maks = z;
cout << "Bilangan terbesar : " << maks;
}
private:
int x, y, z; };
istream& operator>>(istream& in, Banding& bilangan){
cout << "Bilangan pertama = ";
in >> bilangan.x;
cout << "Bilangan kedua = ";
in >> bilangan.y;
cout << "Bilangan ketiga = ";
cin >> bilangan.z;
return in;
};
main() {
Banding bilangan;
cin >> bilangan;
bilangan.bandingkan();
getch();
return 0;
}
2.
#include<cstdlib>
#include<iostream>
#include <conio.h>
#include<math.h>
using namespace std;
class persamaan{
public:
void persamaan_kuadrat();
float rumus();
private:
int x,y,z;
float x1,x2;
float disk;
};
void persamaan::persamaan_kuadrat(){
cout<<"masukkan nilai A :";
cin>>x;
cout<<"masukkan nilai B :";
cin>>y;
cout<<"masukkan nilai C :";
cin>>z;
}
float persamaan::rumus(){
disk=y*y-4*x*z;
if (disk>0)
{
cout<<"Diskriminan="<<disk<<" Maka akar-akarnya adalah:"<<endl;
x1=(-y+(sqrt(disk)))/(2*x);
cout<<"x1 :"<<x1;
cout<<endl;
x2=(-y-(sqrt(disk)))/(2*x);
cout<<"x2 :"<<x2;
}
else if(disk=0)
{
cout<<"Diskriminan="<<disk<<" Maka akar-akarnya adalah:"<<endl;
x1=-y/2*x;
cout<<"x1 :"<<x1;
cout<<endl;
x2=x1;
cout<<"x2 :"<<x2;
}
else
cout<<"akar imajiner";
}
int main(int argc, char *argv[])
{
persamaan X;
X.persamaan_kuadrat();
X.rumus();
return 0;
}
3.
# include <iostream>
# include <conio.h>
#include <windows.h>
using namespace std;
int main()
{
int NILAI;
system("clrscr");
cout<<"\n============================================\n";
cout<<"Kode Range Nilai\n";
cout<<"\n============================================\n";
cout<<" 1 00-20\n";
cout<<" 2 21-40\n";
cout<<" 3 41-60\n";
cout<<" 4 61-80\n";
cout<<" 5 81-100\n";
cout<<"\n-------------------------------------------\n";
cout<<"Silahkan pilih kode dari nilai anda =";cin>>NILAI;
switch(NILAI)
{
case 1:
cout<<"E";
break;
case 2:
cout<<"D";
break;
case 3:
cout<<"C";
break;
case 4:
cout<<"B";
break;
case 5:
cout<<"A";
break;
default:
cout<<"Invalid";
break;
}
getch();
}
4.
#include <iostream>
#include <windows.h>
#include <string>
using namespace std;
int main()
{
int B;
float A;
cout <<" masukan bilangan" << endl;
cin >> A;
B =A;
if (A==B)
{
cout << "BilanganBulat" << endl; }
else
{
cout << "BilanganReal" << endl; }
system("PAUSE");
return 0;
}
5.
#include <cstdlib>
#include <iostream>
#include <stdio.h>
using namespace std;
int main()
{
int bulan, tahun, hari;
int jum_hari[12]=
{31,28,31,30,31,30,31,31,30,31,30,31};
char b1[10],b2[10],b3[10],b4[10],b5[10],b6[10],b7[10],
b8[10],b9[10],b10[10],b11[10],b12[10];
cout<<"\t\t--------------------------------------------\n";
cout<<"\t\t>>MENENTUKAN JUMLAH HARI DALAM SUATU BULAN<<\n";
cout<<"\t\t--------------------------------------------\n";
cout<<"\n";
cout<<"\t\tKeterangan\n";
cout<<"\t\t-------------------------------------------\n";
cout<<"\t\tBulan 1: Januari | Bulan 7 :Juli\n";
cout<<"\t\tBulan 2: Februari | Bulan 8 :Agustus\n";
cout<<"\t\tBulan 3: Maret | Bulan 9 :September\n";
cout<<"\t\tBulan 4: April | Bulan 10:Oktober\n";
cout<<"\t\tBulan 5: Mei | Bulan 11:November\n";
cout<<"\t\tBulan 6: Juni | Bulan 12:Desember\n";
cout<<"\t\t-------------------------------------------\n";
cout<<"\t\tMasukkan Bulan (1--12) :";
cin>>bulan;
cout<<"\t\tMasukkan Tahun :";
cin>>tahun;
if(bulan==2)
{if(tahun &4==0)
hari=29;
else
hari=28;
}
else
hari=jum_hari[bulan-1];
cout<<"\t\t-------------------------------------------\n";
cout<<"\t\tJumlah hari dalam bulan :";
cout<<bulan<<endl;
cout<<"\t\tPada tahun :";
cout<<tahun<<endl;
cout<<"\t\tDalam Satu Bulan Terdapat :",
cout<<hari;
cout<<"hari\n";
cout<<endl;
system("pause");
return 0;
}
6.
#include <iostream>
#include <conio.h>
using namespace std;
class Karakter
{
private:
char karakter;
public:
void Proses ();
void Output ();
};
void Karakter::Proses()
{
cout<<"Masukkan Karakter = ";cin>>karakter;
};
void Karakter::Output(){
if (karakter >='A' && karakter <='Z')
cout<<"Huruf Besar"<<endl;
else if (karakter >= 'a' && karakter <='z')
cout<<"Huruf Kecil"<<endl;
else if (karakter >= '0' && karakter <= '9')
cout<<"Digit (Bilangan)"<<endl;
else
cout<<"Simbol"<<endl;
};
main ()
{
Karakter bilhur;
bilhur.Proses();
bilhur.Output();
getch ();
return 0;
}
7.
#include <iostream>
#include <conio.h>
using namespace std;
class Nilai {
friend ostream& operator<<(ostream&, Nilai&);
friend istream& operator>>(istream&, Nilai&);
public:
Nilai() {};
void konversikan() {
if ((nilai > 0) && (nilai <= 60))
nilai_huruf = 'F';
else if ((nilai > 60) && (nilai <= 70))
nilai_huruf = 'D';
else if ((nilai > 70) && (nilai <= 80))
nilai_huruf = 'C';
else if ((nilai > 80) && (nilai <= 90))
nilai_huruf = 'B';
else nilai_huruf = 'A';
}
private:
int nilai;
char nilai_huruf;
};
istream& operator>>(istream& in, Nilai& masukan) {
cout << "Masukkan nilai angka = ";
in >> masukan.nilai;
return in;
};
ostream& operator<<(ostream& out, Nilai& keluaran) {
out << "Nilai angka : " << keluaran.nilai << endl;
out << "Nilai huruf : " << keluaran.nilai_huruf;
return out;
}
int main() {
Nilai angka;
cin >> angka;
angka.konversikan();
cout << angka;
}
8.
#include <iostream>
using namespace std;
void first (int n) {
switch (n) {
case 1: cout << "satu "; break;
case 2: cout << "dua "; break;
case 3: cout << "tiga "; break;
case 4: cout << "empat "; break;
case 5: cout << "lima "; break;
case 6: cout << "enam "; break;
case 7: cout << "tujuh "; break;
case 8: cout << "delapan "; break;
case 9: cout << "sembilan "; break;
case 10: cout << "sepuluh "; break;
case 11: cout << "sebelas "; break;
default: break;
}
}
void second (int n) {
int bul, sisa;
bul = n / 10;
sisa = n % 10;
if (bul == 0)
first (sisa);
else if (bul == 1) {
if (sisa <= 1)
first (n);
else {
first (sisa);
cout << "belas ";
}
}
else {
first (bul);
cout << "puluh ";
first (sisa);
}
}
void third (int n) {
int bul, sisa;
bul = n / 100;
sisa = n % 100;
if (bul == 0)
second (sisa);
else if (bul == 1) {
if (sisa == 0)
cout << "seratus ";
else {
cout << "seratus ";
second (sisa);
}
}
else {
first (bul);
cout << "ratus ";
second (sisa);
}
}
void fourth (int n) {
int bul, sisa;
bul = n / 1000;
sisa = n % 1000;
if (bul == 0)
third (sisa);
else if (bul == 1) {
if (sisa == 0)
cout << "seribu ";
else {
cout << "seribu ";
third (sisa);
}
}
else {
third (bul);
cout << "ribu ";
third (sisa);
}
}
void fifth (int n) {
int bul, sisa;
bul = n / 1000000;
sisa = n % 1000000;
if (bul == 0)
fourth (sisa);
else if (bul == 1) {
if (sisa == 0)
cout << "satu juta ";
else {
cout << "satu juta ";
fourth (sisa);
}
}
else {
third (bul);
cout << "juta ";
fourth (sisa);
}
}
int main () {
int n = 1;
while (n == 1) {
int num1;
do {
cout << "";
cin >> num1;
} while (num1 < 1);
fifth (num1);
cout << "\n";
}
}
9.
#include <iostream>
#include <conio.h>
#include <stdio.h>
#include <string.h>
#include <windows.h>
using namespace std;
main()
{
//input
char nama_kar [20], pendidikan[5];
float tunjangan, total;
double gaji, jam_kerja, tot_kerja, uang_lembur, jam_lembur, kode;
system("clrscr");
cout<<"Program untuk menghitung gaji karyawan kontrak"<<endl;
cout<<"PT. Master SSD"<<endl;
cout<<"======================================="<<endl<<endl;
cout<<"Masukan nama karyawan: ";
gets(nama_kar);
cout<<"Masukan kode pendidikan karyawan [1/2/3]: ";
cin>>kode;
cout<<"Masukan jumlah jam kerja: ";
cin>>tot_kerja;
//proses
if (kode==1)
{strcpy (pendidikan,"SMU adalah sebesar: Rp. ");
tunjangan=800000*2.5/100;}
else if (kode==2)
{strcpy(pendidikan,"D3 adalah sebesar: Rp. ");
tunjangan=800000*5/100;}
else
{strcpy(pendidikan,"S1 adalah sebesar: Rp. ");
tunjangan=800000*7.5/100;}
gaji=800000;
//Total jam kerja per bulan adalah 192 jam.
/*Minimal memasukan jam kerja 192 jam, karena dibawah itu
akan menyebabkan nilai lembur menjadi minus
dan akan mempengaruhi nilai total honor yang diterima.*/
jam_kerja=8*6*4;
jam_lembur=tot_kerja-jam_kerja;
uang_lembur=jam_lembur*2500;
total=uang_lembur+gaji+tunjangan;
//output
cout<<""<<endl<<endl;
cout<<"Karyawan yang bernama: "<<nama_kar<<endl;
cout<<"Honor yang diterima sebagai berikut:"<<endl<<endl;
cout<<"Honor tetap Rp. "<<gaji<<endl;
cout<<"Tunjangan pendidikan "<<pendidikan<<tunjangan<<endl;
cout<<"Jumlah lembur: "<<jam_lembur;
cout<<" jam x 2500 adalah sebesar Rp. "<<uang_lembur<<endl<<endl;
cout<<"Total honor yang diterima Rp."<<total<<endl;
getch();
}
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