Is return statement optional? Compare and comment on the following two return statements:

Q. Is return statement optional? Compare and comment on the following two return statements:

return

return val

Answer =

 

The return statement is optional only when the function is void or we can say that when the function does not return a value. A function that returns a value must have at least one return statement.
From the given two return statements, the statement:
return

Is not returning any value. Rather, it returns the control to caller along with empty value None. And the statement:

return val

is returning the control to caller along with the value contained in variable val.