Question $6$

$1$ pts

What is the difference between call$-$by$-$address and call$-$by$-$alias?

Call$-$by$-$address can modify the variable outside the function, but call$-$by$-$alias cannot.

Call$-$by$-$alias can modify the variable outside the function, but call$-$by$-$address cannot.

Call$-$by$-$alias involves one variable only, while call$-$by$-$address involves two variables.

The actual parameter in call$-$by$-$address has to be a variable, while the actual parameter in call$-$by$-$alias can be a variable or a constant.