Program konversi bilangan dari cm ke km,meter,dan cm

#include<iostream>
#include<conio.h>
using namespace std;
int main(){
int cm,m,km,a,b,c;
cout<<"konversi dari cm ke km,m,cm:"<<endl;
cout<<"masukan nilai a:";
cin>>a;
km=a/100000;
b=a%100000;
m=b/100;
c=b%1000;
cm=c;
cout<<endl<<endl;
cout<<"km="<<a/100000<<endl<<endl;
cout<<"m="<<b/100<<endl<<endl;
cout<<"cm="<<c<<endl<<endl;
getch();
}