Review of Friday's programs: Pass by value and pass by reference. Break pass by reference down into two categories: out and in/out
out output only is the purpose of the parameter - to pass back results
void intfrac(float n, float& intp, float& fracp)
{
intp = float( long(n) );
fracp = n - intp;
}
n is an input parameter
intp is an output parameter (call by reference)
fracp is an output parameter (call by reference)
in/out input and output is the role - swap() parameters are example of in/out
void swap( int& numb1, int& numb2)
{
int temp = numb1;
numb1 = numb2;
numb2 = temp;
}
numb1 is an input/output parameter (call by refereence)
numb2 is an input/output parameter (call by refereence)