underblack: April 2016

Minggu, 17 April 2016

ppt pertemuan 7 kasus 6

6.1
#include <iostream>

/* run this program using the console pauser or add your own getch, system("pause") or input loop */
using namespace std;

class HitungRata{
friend ostream& operator<<(ostream&, HitungRata&);
friend istream& operator>>(istream&, HitungRata&);
public:
float rata();
private:
int n;
int A[20];
};
istream& operator>>(istream& in,HitungRata& a){
cout<<"Banyaknya data : ";
in>>a.n;
for(int i=0;i<a.n;i++){
cout<<"Masukkan data ke-: "<<i+1<<">";
in>>a.A[i];
}
return in;
}
float HitungRata::rata(){
float total=0;
for(int i=0;i<n;i++)total=total+A[i];
return(total/n);
}

ostream& operator<<(ostream& out,HitungRata& a){
out<<"Rata-rata dari "<<a.n<<" bilangan adalah : "<<a.rata()<<endl;
return out;
}

main()
{
HitungRata run;
cin>>run;
cout<<run;
return 0
;
}

6.2
#include <iostream>
#include <math.h>
using namespace std;

class HitungStatistik{
friend ostream& operator<<(ostream&, HitungStatistik&);
friend istream& operator>>(istream&, HitungStatistik&);

float rata();
float STD();

long sqr(int n) { return(n*n);}
int n;
int A[20];
};

istream& operator>>(istream& in, HitungStatistik& a)
{
cout<<"Banyaknya data : ";
cin>>a.n;
for (int i = 0; i < a.n; i++)
{
cout<<"Masukan data ke- :"<<i+1<<">";
cin>>a.A[i];
}
return in;
}
float HitungStatistik::rata()
{
float total=0;
for (int i = 0; i<n; i++) total = total + A[i];
return(total/n);
}

float HitungStatistik::STD ()
{ float rerata = rata();
float jumlah=0.0;
for (int i = 0; i<n; i++)
jumlah = jumlah + sqr(A[i] - rerata);
return(sqrt (jumlah/(n-1)));
}
ostream& operator<<(ostream& out, HitungStatistik& a) {
cout << "Rata-rata dari " << a.n
<< " bilangan adalah : " << a.rata() << endl;
cout << "Standar deviasi= " << a.STD();
return out;
}

main() {
HitungStatistik run;
cin >> run;
cout << run<<endl;
return 0;
}

6.3
#include <iostream>
#include <math.h>
using namespace std;
class HitungStatistik {
friend ostream& operator<<(ostream&, HitungStatistik&);
friend istream& operator>>(istream&, HitungStatistik&);
public:
int maksimum();
private:
int maksimum2(int, int);
int n; // banyaknya data
int A[20]; // array untuk menyimpan data
};

istream& operator>>(istream& in, HitungStatistik& a)
{
cout << "Banyaknya data : ";
in >> a.n;
for (int i = 0; i < a.n; i++)
{
cout << "Data ke- : " << i+1 << " > ";
in >> a.A[i];
}
return in;
}

int HitungStatistik::maksimum2(int a, int b)
{ if (a>b) return(a);
else return(b);
}

int HitungStatistik::maksimum()
{ int temp = A[0];
for (int i = 1; i<n; i++)
temp = maksimum2(temp, A[i]);
return(temp);
}

ostream& operator<<(ostream& out, HitungStatistik& a) {
out << "Nilai terbesar: " << a.maksimum();
return out;
}

main() {
HitungStatistik run;
cin >> run;
cout << run;
return 0;
}

6.4
#include <iostream>
#include <math.h>

/* run this program using the console pauser or add your own getch, system("pause") or input loop */
using namespace std;

class HitungStatistik {
friend ostream& operator<<(ostream&, HitungStatistik&);
friend istream& operator>>(istream&, HitungStatistik&);
public:
void maks_min();
private:
int m1, m2; // m1 untuk maksimum, m2 untuk min
int n; // banyaknya data
int A[20]; // array untuk menyimpan data
};

istream& operator>>(istream& in, HitungStatistik& a)
{
cout << "Banyaknya data : ";
in >> a.n;
for (int i = 0; i < a.n; i++)
{
cout << "Data ke- : " << i+1 << " > ";
in >> a.A[i];
}
return in;
}

void HitungStatistik::maks_min()
{ m1 = m2 = A[0];
for (int i=1; i<n; i++)
{
if (A[i] > m1) m1 = A[i];
if (A[i] < m2) m2 = A[i];
}
}

ostream& operator<<(ostream& out, HitungStatistik& a) {
a.maks_min();
out << "Nilai terbesar : " << a.m1 << endl;
out << "Nilai terkecil : " << a.m2;
return out;
}

main() {
HitungStatistik run;
cin >> run;
return 0;
}

6.5
#include <cstdlib>
#include <iostream>
#include <math.h>
using namespace std;

class HitungStatistik {
friend ostream& operator<<(ostream&, HitungStatistik&);
friend istream& operator>>(istream&, HitungStatistik&);
public:
HitungStatistik();
void hitung_modus();
private:
void maksimum();
void frekuensi();
int maks, item;
int n;
int A[20];
int f[11];
};

HitungStatistik::HitungStatistik()
{ for (int i=0; i<20; i++) f[i] = 0; }

istream& operator>>(istream& in, HitungStatistik& a) {
cout << "Banyaknya data : ";
cin >> a.n;
for (int i = 0; i < a.n; i++) {
cout << "Data ke- : " << i+1 << " > ";
cin >> a.A[i];
}
return in;
}

void HitungStatistik::maksimum()
{
maks = f[0];
item = 1;
for (int i=0; i<n; i++)
if (f[i] > maks) {
maks = f[i];
item = i;
}
cout << "Modus = " << item;
}

void HitungStatistik::frekuensi()
{
for (int i=1; i<n; i++) ++f[A[i]];
}

void HitungStatistik::hitung_modus() {
cout << "Frekuensi running\n";
frekuensi();
maksimum();
}

ostream& operator<<(ostream& out, HitungStatistik& a) {
cout << "Mulai ...\n";
a.hitung_modus();
cout << "Nilai modus : " << a.item<endl;
return out;
}

main() {
HitungStatistik run;
cin >> run;
cout << run<<endl;
system("pause");
return 0;
}

6.6
#include <iostream>
#include <string.h>
#include <conio.h>

using namespace std;

class Palindrom {
friend ostream& operator<<(ostream&, Palindrom&);
friend istream& operator>>(istream&, Palindrom&);
public:
int cek_palindrom();
private:
char *s;
};
ostream& operator<<(ostream& out, Palindrom& a) {
if (a.cek_palindrom())
cout << a.s << " adalah palindrom";
else out << a.s << " bukan palindrom";
return out;
};
istream& operator>>(istream& in, Palindrom& a) {
cout << "Masukkan sebuah kalimat : ";
cin >> a.s;
return in;
};

int Palindrom::cek_palindrom()
{ int i, pj;
pj = strlen(s);
for (i=0; i<=pj/2 ;i++)
if (s[i] != s[pj-i-1]) return 0;
return 1;
}

main() {
Palindrom kata;
cin >> kata;
cout << kata;
getch();
return 0;
}

E-book how to solve

4.1
#include <iostream>
#include <stdlib.h>
using namespace std;
int main(void)
{
int A[5] = {5, 10, 6, 0, 4};
int B[5] = {0, 0, 0, 0, 0};
int i;
// Nilai array A integer
cout<<"Nilai dari array A: ";
for(i=0; i<5; i++){
cout<<A[i];
}
//
for(i=0; i<5; i++){
B[4-i] = A[i];
}
// Output
cout<<"\n";
cout<<"Nilai dari array B hasil dari membalikkan nilai array A :\n";
for(i=0; i<5; i++){
cout<<B[i];
}
cout<<"\n";

system("pause");
return(0);
}

4.2
#include <iostream>

/* run this program using the console pauser or add your own getch, system("pause") or input loop */
using namespace std;
int main(int argc, char** argv) {
int banyak, i,x;
int nilai[20];
string nama;
cout<<"Masukan Banyak Mahasiswa :"; cin>>banyak;

for (int i=1;i<=banyak;i++){
cout<<"nama Mahasiswa :";cin>>nama;
cout<<"Masukan nilai :";cin>>nilai[20];

if (nilai[20]>=80 || nilai[20]<=100){
cout<<"\n Nilai "<<nilai[20]<<"Adalah A";
}
else if (nilai[20]>=60 || nilai[20]<80){
cout<<"\n Nilai "<<nilai[20]<<"Adalah B";
}
else if (nilai[20]>=40 || nilai[20]<60){
cout<<"\n Nilai "<<nilai[20]<<"Adalah C";
}
else if (nilai[20]>=20 || nilai[20]<40){
cout<<"\n Nilai "<<nilai[20]<<"Adalah D";
}
else if (nilai[20]>=0 || nilai[20]<20){
cout<<"\n Nilai "<<nilai[20]<<"Adalah E";
}
cout<<"\n========================================================================\n";
}
return 0;
}

4.3
#include <cstdlib>
#include <iostream>
#include <math.h>
using namespace std;

int main(int argc, char *argv[])
{
int a,b,c,d,bersih,pokok,pajak;
int pendapatan,beban;
int laba_usaha,laba_kotor,laba_sebelum_pajak,laba_bersih;
cout<<"|====================================================|\n";
cout<<"| |\n";
cout<<"| Program Untuk Mencari Laba Usaha |\n";
cout<<"| |\n";
cout<<"|====================================================|\n";
cout<<"| Mencari Pendapatan |\n";
cout<<"|----------------------------------------------------|\n";
cout<<"| Masukkan pendapatan usaha : ";cin>>a;
cout<<"| Masukkan pendapatan di luar usaha : ";cin>>b;
pendapatan=a+b;
cout<<"| Jumlah pendapatan usaha : "<<pendapatan<<"\n";
cout<<"|----------------------------------------------------|\n";
cout<<"| Mencari Beban |\n";
cout<<"|----------------------------------------------------|\n";
cout<<"| Masukkan beban usaha \t\t: ";cin>>c;
cout<<"| Masukkan beban di luar usaha : ";cin>>d;
beban=c+d;
cout<<"| Jumlah beban \t\t\t: "<<beban<<"\n";
cout<<"|----------------------------------------------------|\n";
cout<<"| Mencari Laba |\n";
cout<<"|----------------------------------------------------|\n";
cout<<"| Masukkan penjualan bersih : ";cin>>bersih;
cout<<"| Masukkan harga pokok \t: ";cin>>pokok;
cout<<"| Masukkan pajak \t\t: ";cin>>pajak;
cout<<"|----------------------------------------------------|\n";
cout<<"| Hasil Laba |\n";
cout<<"|----------------------------------------------------|\n";
laba_kotor=bersih-pokok;
cout<<"| Laba Kotor \t\t: "<<laba_kotor<<"\n";
laba_usaha=laba_kotor-c;
cout<<"| Laba Usaha \t\t: "<<laba_usaha<<"\n";
laba_sebelum_pajak=laba_usaha+(b-d);
cout<<"| Laba Sebelum Usaha : "<<laba_sebelum_pajak<<"\n";
laba_bersih=laba_sebelum_pajak-(pajak*15/100);
cout<<"| Laba Bersih \t\t: "<<laba_bersih<<"\n";
cout<<"|====================================================|\n";

system("pause");
return 0;
}

4.4
#include <iostream>

/* run this program using the console pauser or add your own getch, system("pause") or input loop */
using namespace std;
int main(int argc, char** argv) {
int a[20],n;
cout<<"Batas : ";
cin>>n;

for (int i=0;i<n;i++){
cout<<"Data : ";
cin>>a[i];
}
for (int i=0;i<n;i++){
if(a[i]==a[i+1])
cout<<a[i];
else if(a[i-1]==a[i])
cout<<"";
else if(a[i]==a[i+2])
cout<<a[i];
else if(a[i-2]==a[i])
cout<<"";
else if(a[i]==a[i+3])
cout<<a[i];
else if(a[i-3]==a[i])
cout<<"";
else if(a[i]==a[i+4])
cout<<a[i];
else if(a[i-4]==a[i])
cout<<"";
else if(a[i]==a[i+5])
cout<<a[i];
else if(a[i-5]==a[i])
cout<<"";

else
cout<<a[i];
}

/* for (int i=0;i<n;i++){
cout<<a[i]<<" ";

}*/

return 0;
}

4.5.1
#include <iostream>
#include <stdio.h>
/* run this program using the console pauser or add your own getch, system("pause") or input loop */
using namespace std;

int main() {

int n, *arr, onee = 0, twoo, threee, total = 0, maxx = -1, temp_maxx;

cin >> n;
arr = new int[n];

for (int i = 0; i < n; i++) {
cin >> arr[i];
total += arr[i];
}

// O(n^2) is the following

for (int i = 1; i < n - 1; i++) {
onee += arr[i - 1];
twoo = 0;
for (int j = i + 1; j < n; j++) {
twoo += arr[j - 1];
threee = total - twoo - onee;
temp_maxx = max(max(onee, twoo), threee);
if ((temp_maxx < maxx) || (maxx == -1))
maxx = temp_maxx;
}
}

cout << maxx;

return 0;
}

4.5.3
#include <iostream>

/* run this program using the console pauser or add your own getch, system("pause") or input loop */
using namespace std;

//Bucket Sort
void bucket_sort (int arr[], int n)
{
//Here range is [1,100]
int m = 101;

//Create m empty buckets
int buckets[m];

//Intialize all buckets to 0
for (int i = 0; i < m; ++i)
buckets[i] = 0;

//Increment the number of times each element is present in the input
//array. Insert them in the buckets
for (int i = 0; i < n; ++i)
++buckets[arr[i]];

//Sort using insertion sort and concatenate
for (int i = 0, j = 0; j < m; ++j)
for (int k = buckets[j]; k > 0; --k)
arr[i++] = j;
}

//Driver function to test above function
int main()
{
int input_ar[] = {10, 24, 22, 62, 1, 50, 100, 75, 2, 3};
int n = sizeof (input_ar) / sizeof (input_ar[0]);
bucket_sort (input_ar, n);

cout << "Sorted Array : " << endl;
for (int i = 0; i < n; ++i)
cout << input_ar[i] << " ";

return 0;
}

4.6
#include <stdio.h>
#include<iostream>
/* run this program using the console pauser or add your own getch, system("pause") or input loop */
using namespace std;

main() {
int x;
int y;
cout<<"\nMasukkan bilangan ke- 1 :";
cin>>x;
cout<<"Masukkan bilangan ke-2 :";
cin>>y;
if(x>y){

cout<<"lebih besar dari pada\n\n ";cin>>x,y;
}else if(x=y){
cout<<"sama besar dengan\n\n";cin>>x,y;

}else{
cout<<"lebih kecil dari pada\n\n";cin>>x,y;
}

return 0;
}

Selasa, 12 April 2016

diktat bab6
6.1
#include <iostream>

/* run this program using the console pauser or add your own getch, system("pause") or input loop */
using namespace std;
void tukar (int*a,int*b)
{ int temp;
temp=*a;
*a=*b;
*b=temp;
}
int main(int argc, char *argv[]) {
int a=100,b=50;
cout<<"Sebelum Tukar\n";
cout<<"Isi Nilai 1 = "<<a<<endl;
cout<<"Isi Nilai 2 = "<<b<<endl;
tukar(&a,&b);
cout<<"Sesudah Tukar\n";
cout<<"Isi Nilai 1 = "<<a<<endl;
cout<<"Isi Nilai 2 = "<<b<<endl;
return 0;
}

6.2
#include <iostream>

/* run this program using the console pauser or add your own getch, system("pause") or input loop */
using namespace std;

int maksimum2(int a, int b)
{
if(a>b) return (a);
else return(b);

}
int main(int argc, char *argv[]) {
int x,y;
cout<<"Masukan dua integer\n";
cout<<"Bilangan Pertama : ";
cin>>x;
cout<<"Bilangan Kedua : ";
cin>>y;
cout<<"Nilai Terbesar : "<<maksimum2(x,y);

return 0;
}

6.5
#include <iostream>

/* run this program using the console pauser or add your own getch, system("pause") or input loop */
using namespace std;
long facktorial (int n)
{
if((n==0)||(n==1)) return (1);
else return (n*facktorial(n-1));
}
int main(int argc, char *argv[]) {
int n;
long hasil;
cout<<"Masukan Integer n : ";
cin>>n;
hasil=facktorial(n);
cout<<"Nilai"<<n<<"!="<<hasil;

return 0;
}

1.
#include <cstdlib>
#include <iostream>

using namespace std;
void bil(int a)
{
if(a%2!=0)
cout<<"bilangan ganjil"<<endl;
else
cout<<"bilangan genap"<<endl;
}
int main(int argc, char *argv[])
{
int b;
cout<<"|============================|\n";
cout<<"| Menentukan Bilangan Ganjil |\n";
cout<<"| Atau Genap |\n";
cout<<"|============================|\n";
cout<<"masukkan sebuah bilangan : ";cin>>b;
bil(b);
system("pause");
return 0;
}

2.
#include <cstdlib>
#include <iostream>
#include <conio.h>
using namespace std;
void luas(int p,int l){
int hasil;
hasil=p*l;
cout<<"Luas Persegi Panjang : "<<hasil<<endl;
}
int main(int argc, char *argv[])
{
int a,b;
cout<<"|========================|\n";
cout<<"| Mencari Luas Persegi |\n";
cout<<"| Panjang |\n";
cout<<"|========================|\n";
cout<<"Masukkan Panjang : ";cin>>a;
cout<<"Masukkan Lebar \t: ";cin>>b;
luas(a,b);
system("pause");
return 0;
}

3.
#include <cstdlib>
#include <iostream>
#include <conio.h>
using namespace std;
void kel(int p,int l){
int hasil;
hasil=2*(p+l);
cout<<"Keliling persegi panjang : "<<hasil<<endl;
}
int main(int argc, char *argv[])
{
int a,b;
cout<<"|==========================|\n";
cout<<"| Mencari Keliling Persegi |\n";
cout<<"| Panjang |\n";
cout<<"|==========================|\n";
cout<<"Masukkan lebar persegi \t: ";cin>>a;
cout<<"Masukkan panjang persegi : ";cin>>b;
kel(a,b);
system("pause");
return 0;
}

4.
#include <cstdlib>
#include <iostream>
#include <conio.h>
using namespace std;
void luas(int r){
int hasil,phi;
phi=3,14;
hasil=phi*r*r;
cout<<"Hasil luas lingkaran : "<<hasil<<endl;
}
int main(int argc, char *argv[])
{
int r;
cout<<"|=========================|\n";
cout<<"| Program Menghitung Luas |\n";
cout<<"| Lingkaran |\n";
cout<<"|=========================|\n";
cout<<"Masukkan jari-jari : ";cin>>r;
luas(r);
system("pause");
return 0;
}

5.
#include <cstdlib>
#include <iostream>

using namespace std;
void kel(int r){
int hasil,phi;
phi=3,14;
hasil=2*phi*r;
cout<<"Keliling lingkaran : "<<hasil<<endl;
}
int main(int argc, char *argv[])
{
int r;
cout<<"|=============================|\n";
cout<<"| Program Menghitung Keliling |\n";
cout<<"| Lingkaran |\n";
cout<<"|=============================|\n";
cout<<"Masukkan jari-jari : ";cin>>r;
kel(r);
system("pause");
return 0;
}

6.
#include <iostream>
#include <string>

using namespace std;
int main()
{
float L,t,a;

cout<<"Masukan Nilai Alas : "<< endl;
cin >> a;
cout<<"Masukan Nilai Tinggi : "<<endl;
cin >> t;
L = (a*t)/2;
cout << "Nilai Alas : "<<a << endl;
cout << "Nilai Tinggi : "<<t << endl;
cout << "Luas :"<<L << endl;
return 0;
}

7.
#include <iostream>
#include <string>

using namespace std;
int main()
{
string raptor_prompt_variable_zzyz;
float keliling,a,b,c;

cout << "Angka Pertama : ";
cin >> a;

cout <<"Angka Kedua : ";
cin >> b;

cout << "Angka Ketiga : ";
cin >> c;
keliling =a+b+c;
cout << "Keliling "<< keliling << endl;
return 0;
}

8.
#include <iostream>
#include <string>

using namespace std;
int main()
{
float l,t,a;

cout<<"Masukan Nilai Alas : "<<endl;
cin >> a;
cout<<"Masukan Nilai Luas : "<< endl;
cin >> l;

t =2*l-a;
cout << "Nilai Alas : "<<a << endl;
cout << "Nilai Luas :"<<l << endl;
cout << "Tinggi : "<<t << endl;
return 0;
}

9.
#include <cstdlib>
#include <iostream>

using namespace std;
int faktorial (int n)
{
int fak;
if (n<=1)
{
fak=1;
}
else
{
fak=n*faktorial(n-1);
}
return (fak);
}
int main(int argc, char *argv[])
{
int n,r, kombinasi;
cout<<" Program Menghitung Kombinasi"<<endl;
cout<<" \n Masukkan Nilai n : "; cin>>n;
cout<<" \n Masukkan Nilai r : "; cin>>r;
kombinasi=faktorial(n)/(faktorial(r)*faktorial(n-r));
cout<<" \n Kombinasinya adalah: "<<kombinasi<<endl;

system("PAUSE");
return EXIT_SUCCESS;
}

10.
#include <iostream>
#include <cstdlib>
using namespace std;
class permutasi{
private:
int a,b,c,n,r,hasil;
public:
void masukan();
void proses();
void keluaran();
};

void permutasi::masukan(){
cout<<"Program Menghitung Permutasi"<<endl<<endl;
cout<<"masukan n : ";
cin>>n;
cout<<"masukan r : ";
cin>>r;
if(n<r){cout<<"masukan salah n harus lebih besar dari r, silahkan coba kembali. "<<endl;
masukan();}
else{proses();}
}

void permutasi::proses(){
a=1;
for(int i=1;i<=n;i++){
a=a*i;}
b=n-r;
c=1;
for(int i=1;i<=b;i++){
c=c*i;
}
hasil=a/c;keluaran();
}
void permutasi::keluaran(){
cout<<"hasil permutasi adalah : "<<hasil<<endl;
}

int main(int argc, char *argv[])
{
permutasi a;
a.masukan();
system("PAUSE");
return EXIT_SUCCESS;
}

diktat bab 5
5.1
#include <iostream>
using namespace std;
/* run this program using the console pauser or add your own getch, system("pause") or input loop */

int interatif (int x){
int n, c, first = 0, second = 1, next;
cout <<"Masukan Nilai =";cin>>n;cout<<endl;
cout <<"first =" <<n<< " fibonacci:- " <<endl;
for (c=0;c < n ; c++ )
{
if (c<=1)
next = c;
else
{
next = first + second;
first = second;
second = next;
}
cout<<next<<endl;
}
}
int main(int argc, char** argv) {
int x;
interatif(x);

return 0;
}

5.2
#include <iostream>
using namespace std;
/* run this program using the console pauser or add your own getch, system("pause") or input loop */
int interatif (int x){
int c,n,first = 0, second = 1, next;
cout <<"Masukan Nilai =";cin>>n;cout<<endl;

for (c=0;c < n ; c++ )
{
if (c<=1)
next = c;
else
{
next = first + second;
first = second;
second = next;
}
cout<<next<<endl;
}
} int rekursif (int x){
int n,next,first=0,second=1;
cout <<"\nMasukan Nilai =";cin>>n;cout<<endl;

for (x=0;x<n;x++){
if (x<=1)
next=x;
else{
next = first + second;
first=second;
second=next;
}
cout<<next<<endl;
}
}

int main(int argc, char** argv) {
int x;
cout<<"Interatif ="<<interatif(x);cout<<endl;
cout<<"Recurtif ="<<rekursif (x);cout<<endl;

return 0;
}

5.3
#include <iostream>
#include <math.h>
using namespace std;
/* run this program using the console pauser or add your own getch, system("pause") or input loop */

int main(int argc, char** argv) {
int a,b,i,jumlah=0;
cout<<"Menghitung Perkalian dengan Penjumlahan"<<endl;
cout<<"Masukan Nilai pertama = ";cin>>a;
cout<<"Masukan Nilai Kedua = ";cin>>b;
if (a>0 && a<0 || b>0){
for(i=1;i<=b;i++)
jumlah+=a;
cout<<a<<"x"<<b<<"="<<jumlah;
}else if(b<0 && a<0){
for(i=0;i>a;i--)
jumlah-=b;
cout<<a<<"x"<<b<<"="<<jumlah;
}else{
for(i=1;i<=a;i++)
jumlah+=b;
cout<<a<<"x"<<b<<"="<<jumlah;
}
return 0;
}

5.4
#include <iostream>
#include <math.h>
using namespace std;
int rekursif (int x){
int a,b,i,jumlah=0;
cout<<"Menghitung Perkalian dengan Penjumlahan"<<endl;
cout<<"Masukan Nilai pertama = ";cin>>a;
cout<<"Masukan Nilai Kedua = ";cin>>b;
if (a>0 && a<0 || b>0){
for(i=1;i<=b;i++)
jumlah+=a;
cout<<a<<"x"<<b<<"="<<jumlah;
}else if(b<0 && a<0){
for(i=0;i>a;i--)
jumlah-=b;
cout<<a<<"x"<<b<<"="<<jumlah;
}else{
for(i=1;i<=a;i++)
jumlah+=b;
cout<<a<<"x"<<b<<"="<<jumlah;
}
}
/* run this program using the console pauser or add your own getch, system("pause") or input loop */

int main(int argc, char** argv) {
int x;
rekursif(x);
return 0;
}

5.5
#include <iostream>
#include <conio.h>
using namespace std;
int iteratif(int x){
for(int i=10; i>=0; i--){
cout<<i<<endl;;
}
}
int rekursif(int x){
x=10;
int i;
if(x>=0){
rekursif(x-1);
i--;
cout<<x;
}
}
int main(){
int x;
cout<<"\nIteratif : ";
iteratif(x);
cout<<"\nRekursif : ";
rekursif(x);
getch();
return 0;
}

5.8
#include <iostream>
using namespace std;
/* run this program using the console pauser or add your own getch, system("pause") or input loop */

int main(int argc, char** argv) {
int x,y,i;
cout<<"Kasir Supermarket"<<endl;
cout<<"Masukan Seberapa Banyak ";
for (i=0;i<=x;i++)
return 0;
}

latihan
1.#include <iostream>
using namespace std;
int iteratif (int suku, int a, int b, int c) { a=0, b=1; a = 0; b = 1;
if (suku == 1) return b;
if (suku == 0) return a;
else{ for(int i=2; i<=suku; i++){
c = a + b; a = b; b = c; }
return c;
} }
int main()
{ int suku, a, b,c;
cout<<"Masukkan nilai suku ke-: ";
cin>>suku;
cout<<"\nBilangan fibonaccinya untuk "<<suku<<" adalah ";
cout<< iteratif ( suku, a, b, c);
return 0; }

#include <stdio.h>

#include <conio.h>

/* run this program using the console pauser or add your own getch, system("pause") or input loop */

using namespace std;

int fibonacci(int n);

void main()

{

int bil,urfib,ulangi;

{

clrscr();

printf("Bilangan fibonacci urutan ke? ");

scanf("%d",&bil);

urfib=fibonacci(bil);

printf("\nUrutan fibonacci ke %d, adalah %d",bil,urfib);

printf("\n\nApakah anda ingin mengulangi?");

printf("\n1. YA");

printf("\n2. TIDAK (keluar) ");

scanf("%d",&ulangi);

}while(ulangi==1);

}

int fibonacci(int n)

{

int fibonac;

if(n==0)

{

return 0;

}

else if(n==1)

{

return 1;

}

else

fibonac=fibonacci(n-1)+fibonacci(n-2);

return (fibonac);

#include <cstdlib>

#include <iostream>

using namespace std;

class bilangan{

friend ostream& operator<<(ostream&, bilangan&);

friend istream& operator>>(istream&, bilangan&);

public:

bilangan(){};

void proses(){

i =0;

while (!(i>100))

{ if (i % 3==1 && i % 5==1){

}

else

{

cout << i << endl; }

i =i+15;

}

private:

int i;

};

istream& operator>>(istream& in, bilangan& masukkan){

cout<<"Bilangan Yang Habis Dibagi 3 & 5 = "<<endl;

in >>masukkan.i;

return in;

}

ostream& operator<<(ostream& out, bilangan& keluaran){

cout<<"Bilangannya adalah "<<keluaran.i<<endl;

return out;

}

int main(int argc, char *argv[])

{

bilangan bil;

cin >> bil;

bil.proses();

cout<< bil;

cout<< endl;

system("PAUSE");

return 0;

}

diktat bab4 dev c++
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

#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;

}

#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;

}

# 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();

}

#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;

}

#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;

}

#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;

}

#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;

}

#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";

}

#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();

}