#include
#include
#include
int n,k;
class probabilitas
{
public:
void input();
float fact(int bil);
void menu();
int permutasi(int x,int y);
int kombinasi(int x,int y);
};
void probabilitas :: input()
{
clrscr();
gotoxy(20,5);
cout<<”PROGRAM INPUT NILAI”;
gotoxy(20,7);
cout<<”MASUKKAN NILAI N :”;
cin>>n;
do
{
gotoxy(20,8);
cout<<”MASUKKAN NILAI K :”;
gotoxy(38,8);
cin>>k;
if (k>n||k<=0)
{
gotoxy(39,8);
}
}while (k>n||k<=0);
}
float probabilitas :: fact(int bil)
{
if (bil<=1)
{
return 1;
}
else
{
return bil*fact(bil-1);
}
}
int probabilitas :: permutasi(int x,int y)
{
float perm;
clrscr();
gotoxy(20,5);
cout<<”MENCARINILAI PERMUTASI”;
perm=fact(n)/(fact(n-k));
gotoxy(20,7);
cout<<”P(”<
getch();
return perm;
}
int probabilitas :: kombinasi(int x,int y)
{
float komb;
clrscr();
gotoxy(20,5);
cout<<”MENCARI NILAI KOMBINASI”;
komb=fact(n)/(fact(k)*fact(n-k));
gotoxy(20,7);
cout<<”C(”<
getch();
return komb;
}
void probabilitas :: menu()
{
int pil;
while (pil<=4||pil!=0)
{
clrscr();
gotoxy(20,4);cout<<”———————-”;
gotoxy(20,5);cout<<”|PROGRAM PROBABILITAS|”;
gotoxy(20,6);cout<<”———————-”;
gotoxy(20,7);cout<<”1. INPUT BILANGAN |”;
gotoxy(20,8);cout<<”2. HITUNG PERMUTASI |”;
gotoxy(20,9);cout<<”3. HITUNG KOMBINASI |”;
gotoxy(20,10);cout<<”4. KELUAR |”;
gotoxy(20,11);cout<<”———————-”;
gotoxy(20,12);cout<<”| SELAMAT MENCOBA |”;
gotoxy(20,13);cout<<”———————-”;
gotoxy(20,15);cout<<”MASUKKAN PILIHAN ANDA :”;cin>>pil;
switch(pil)
{
case 1: input();
break;
case 2: permutasi(n,k);
break;
case 3: kombinasi(n,k);
break;
case 4: exit(0);
}
}
}
void main()
{
probabilitas obj;
obj.menu();
getch();
}
saya hanya ingin share ilmu yg saya dapat, kalau masih ada yg salah maaf, maklum masih awam neh
