Kasus 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;
}
compile
Kasus 4.2 a
#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;
}
compile
compile
Kasus 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();
}
compile
compile
Kasus 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;
}
compile
compile
Kasus 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;
}
compile
compile
Kasus 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;
}
compile
compile
Algoritma diktat 4.
4.1
Algoritma Maksimum
{Menentukan nilai terbesar antara dua bilangan
bulat}
Deklarasi:
A,B :
integer
Deskripsi:
Read(A,B)
If(A>B)
then write (‘Bilangan terbesar adalah = ‘A)
Else
write (‘Bilangan terbesar adalah = ‘B)
Endif
4.2 a
Algoritma Nilai_Maksimum
{Membaca tiga buah bilangan bulat, menentukan
bilangan terbesar diantara tiga buah bilangan tersebut dan menampilkannya
kelayar}
Deklarasi:
X,y,z
: iteger
Deskripsi:
Read(x,y,z)
If(x>y)
and (x>z) then write (‘Bilangan terbesar adalah = ‘x)
Else
if(y>z) and (y>z) then write (‘Bilangan terbesar adalah = ‘y)
Else
write (‘Bilangan tersebar adalah = ‘z)
End
if
4.2 b
Algoritma Nilai_Maksimum
{ Membaca tiga buah bilangan bulat, menentukan
bilangan terbesar diantara tiga buah bilangan tersebut dan menampilkannya
kelayar}
Deklarasi:
X,y,z
: iteger
Maks
: iteger
Deskripsi:
Read(x,y,z)
Maks ß
x
If (y
> maks) then maks ß y end if
If (z
> maks) then maks (z end if
Write
(‘Bilangan terbesar adalah = ‘maks)
4.3
Algoritma Persamaan_Kuadrat
{Menghitung akar-akar persamaan kuadrat Ax^2+Bx+C=0}
Deklarasi:
A,B,C : integer
A,B,C : integer
Disk
: logint
X1,x2
: real
Deskripsi:
Read
(A,B,C)
Disk ß
B*B-4*A*C
If(A=0)
then write (‘Bukan persamaan kuadrat’)
Else
if disk >0 then
X1
(-B+ sqrt (disk)/2*A
X1
(-B- sqrt (disk)/2*A
Else
if disk = 0 then
X1
(-B/2*A
X2(x1
Else
write (‘Akar Imajiner’)
End if
Write(x1,x2)
4.4
Algoritma Konversi_Nilai
{Mengkonversikan nilai angka menjadi nila huruf}
Deklarasi:
Nilai
: iteger
Nilai_huruf
: char
Deskripsi:
Read
(nilai)
If(nilai>0)
and (nilai <= 20 ) then nilai_huruf ß ‘E’
Else
if (nilai > 20) and (nilai <=40) then nilai_huruf ß
‘D’
Else
if (nilai > 40) and (nilai <=60) then nilai_huruf ß
‘C’
Else
if (nilai > 60) and (nilai <=80) then nilai_huruf ß
‘B’
Else nilai_huruf
ß
‘A’
Endif
Write
(nilai_huruf)
4.5
Algoritma menentukan_hari
{Masukkan integer 1 sampai 7, akan ditentukan hari
apa yang sesuai}
Deklarasi
Hari_ke
: iteger
Hari
: string
Deskripsi:
Read(hari_ke);
Case
(hari_ke)of
1
: hari ß
‘Senin’;
2 : hari ß
‘Selasa’;
3
: hari ß
‘Rabu’;
4
: hari ß
‘Kamis’;
5
: hari ß
‘Jumat’;
6
: hari ß
‘Sabtu’;
Else
hari ß’Minggu’;
End
case
Write
(hari)
Latihan
No. 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;
}
No.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;
}
No.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();
}
No.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;
}
No.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;
}
No.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;
}
No.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;
}
No.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";
}
}
No.9
#include
<iostream>
#include
<conio.h>
#include
<stdlib.h>
#include
<stdio.h>
#include <iomanip>
#include
<windows.h>
/**-----------------------------------------------------------------------------
*gatewan.com
*Wawan Beneran
*Penggajian
------------------------------------------------------------------------------*/
using namespace
std;
int main(){
char
nama[99],pddkn[10],sn,yes;
int
tsn,gol,lk,th,hr;
long thr,jml;
float
tpddkn,tlk,tt,tgol;
int const
gj_pkk=950000;
atas:
cout<<"
Program Hitung Gaji Karyawan"<<endl<<endl;
cout<<"
PT. ABCD"<<endl;
cout<<"----------------------------------"<<endl<<endl;
cout<<"Nama
Karyawan : "<<setw(5);gets(nama);
cout<<"Status
Nikah (Y/T) : "<<setw(5);cin>>sn;
cout<<"Golongan
(1/2/3) : "<<setw(5);cin>>gol;
cout<<"Pendidikan
(D3/S1/S2/S3) : "<<setw(5);cin>>pddkn;
cout<<"Lama
Kerja : "<<setw(5);cin>>lk;
cout<<"Jumlah
Hari Masuk kerja : "<<setw(5);cin>>hr;
//--------------------------------klrga--------------------------------------
if(sn=='y'||
sn=='Y'){
tsn=150000;
}
else if(sn=='t'||
sn=='T'){
tsn=0;
}
else{
system("cls");
cout<<"
Maaf Kode Status Nikah Anda Salah!!!"<<endl<<endl;
goto bawah;
}
//--------------------------------jabatan------------------------------------
if(gol==1){
tgol=0.05*gj_pkk;
tt=10000*hr;
}
else if(gol==2){
tgol=0.1*gj_pkk;
tt=20000*hr;
}
else if(gol==3){
tgol=0.15*gj_pkk;
tt=25000*hr;
}
else{
system("clrscr");
cout<<"
Maaf Kode Jabatan Anda Salah!!!"<<endl<<endl;
goto bawah;
}
//--------------------------------pddkn----------------------------------------
if(strcmp(pddkn,"d3")==0||strcmp(pddkn,"D3")==0){
tpddkn=0.05*gj_pkk;
}
else
if(strcmp(pddkn,"s1")==0||strcmp(pddkn,"S1")==0){
tpddkn=0.075*gj_pkk;
}
else
if(strcmp(pddkn,"s2")==0||strcmp(pddkn,"S2")==0){
tpddkn=0.1*gj_pkk;
}
else
if(strcmp(pddkn,"s3")==0||strcmp(pddkn,"S3")==0){
tpddkn=0.125*gj_pkk;
}
else{
system("clrscr");
cout<<"
Maaf Kode Pendidikan Anda Salah!!!"<<endl<<endl;
goto bawah;
}
//----------------------------------bonus------------------------------------
if(lk==0){
tlk=0;
}
else if(lk==1){
tlk=0.025*gj_pkk;
}
else if(lk==2){
tlk=0.05*gj_pkk;
}
else if(lk==3){
tlk=0.075*gj_pkk;
}
else if(lk>=4){
tlk=0.1*gj_pkk;
}
else {
system("clrscr");
cout<<"
Maaf Kode Lama Kerja Anda Salah!!!"<<endl<<endl;
goto bawah;
}
//-------------------------------jmlhr----------------------------------------
if(hr>20){
thr = hr / 20 *
gj_pkk + gj_pkk;
}
else if(hr<=20){
thr= gj_pkk;
}
else {
system("clr");
cout<<"
Maaf Kode Lama Kerja Anda Salah!!!"<<endl<<endl;
goto bawah;
}
jml=
thr+tgol+tpddkn+tt+tsn+tlk;
//------------------------------------------------------------------------------
cout<<endl<<endl;
cout<<"Karyawan
yang bernama : "<<setw(5)<<nama<<endl<<endl;
cout<<"Gaji
Yang Diterima"<<endl<<endl;
cout<<"Gaji
Pokok + Lembur :Rp."<<setw(5)<<thr<<endl;
cout<<"Tunjangan
Jabatan :Rp."<<setw(5)<<tgol<<endl;
cout<<"Tunjangan
Pendidikan :Rp."<<setw(5)<<tpddkn<<endl;
cout<<"Tunjangan
Transportasi :Rp."<<setw(5)<<tt<<endl;
cout<<"Tunjangan
Keluarga :Rp."<<setw(5)<<tsn<<endl;
cout<<"Bonus
:Rp."<<setw(5)<<tlk<<endl;
cout<<"--------------------------------------------
+"<<endl<<endl;
cout<<"Gaji
Yang Diterima :Rp."<<setw(5)<<jml<<endl<<endl;
bawah:
cout<<"Entry
Data lagi (Y/T) ?";cin>>yes;
if(yes=='Y'||yes=='y'){
system("clrscr");
goto atas;
}
else
if(yes=='N'||yes=='n'){
system("clrscr");
cout<<"\n
THANK YOU";
}
else{
system("clrscr");
cout<<"\n
THANK YOU";
}
getch();
}
no.9 gambar 2
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