Thread: What is the diffence with these functions

have a queston that is confusing me....ok say we want to pass a call to a function by refence or a pointer....like this

Code:

void squarebyRefernce( int &numberRef )
{
nuberRef *= numberRef;
}

//or this

void squraebyReference( int *nPtr )
{
*nPtr = *nPtr * *nPtr;
}

My question is...what is the difference... and why would you chose one over the other?

From what i gather they both do the same thing.