use Calculater::main;

Calculater::main::basicfun::add(&mut a,&mut b); 

 Calculater::main::basicfun::sub(&mut a,&mut b); 

 Calculater::main::basicfun::mul(&mut a,&mut b); 

 Calculater::main::basicfun::div(&mut a,&mut b); 

 Calculater::main::squarefun::squr(&mut a); 

 Calculater::main::squarefun::cube(&mut a); 

 Calculater::main::squarefun::power(&mut a,&mut b);