mencari bilangan FPB

#include <iostream.h>
#include <conio.h>
                
using namespace std;

class fpb {
     

public:
    void input();
   void output();
   void proses();

private:
    int a,b,c;
   int nilai;
};

  void fpb::input(){
    cout<<"Masukkan Nilai Bil A : "; cin>>a;
    cout<<"Masukkan Nilai Bil B : "; cin>>b;
   

  }
void fpb::proses(){
    
     int fpb;
     fpb = a%b;
     nilai = (a*b)/abs(fpb);
    
}

void fpb::output()
{
     proses();
    cout<<"FPB Antara "<<a<<" dan "<<b<<" Adalah "<<nilai<<endl;
   
}




int main(int argc, char *argv[])
{
   
    fpb bilangan;
   bilangan.input();
   bilangan.output();
    system("PAUSE");
    return EXIT_SUCCESS;
}


This program serves to find the gcd of numbers with each other