#include <cstdlib>
#include <iostream>
using namespace std;
class kombinatorial{
public:
void permutasi();
void combinasi();
private:
int i,n,r,p,t,a,b,c;
};
void kombinatorial::permutasi(){
cout<<"PERMUTASI"<<endl;
cout<<"Masukan n:";
cin>>n;
cout<<"Masukan r:";
cin>>r;
a=1;
b=1;
for(i=n;i>0;i--)
{
a *=i;
}
t=n-r;
if(t!=0)
{
for(i=t;i>0;i--)
{
b *=i;
}
}
if(t!=0)
{
p=a/b;
cout<<"Hasil:"<<p<<endl;
}
else
{
cout<<a<<endl;
}
}
void kombinatorial::combinasi(){
cout<<"COMBINASI"<<endl;
cout<<"Masukan n:";
cin>>n;
cout<<"Masukan r:";
cin>>r;
a=1;
b=1;
c=1;
for(i=n;i>0;i--)
{
a *=i;
}
t=n-r;
if(t!=0)
{
for(i=t;i>0;i--)
{
b *=i;
}
}
for(i=r;i>0;i--)
{
c *=i;
}
if(t!=0)
{
p=a/(b*c);
cout<<"Hasil:"<<p<<endl;
}
else
{
cout<<a<<endl;
}
}
int main(int argc, char *argv[])
{
kombinatorial x;
x.permutasi();
cout<<endl;
x.combinasi();
cout<<endl;
system("PAUSE");
return EXIT_SUCCESS;
}
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