Default return value

[Techno]

Hi all,

1) What is the default return value in a procedure when there is no data type or pointer defined?.

2) Can I return a pointer as a return value, and how do you do that?.

3) What is an ASCII string in Terminal Zero IWBasic?

Kind regards
Stephane

[LarryMc]

1) What is the default return value in a procedure when there is no data type or pointer defined?.

If you don't declare a return type and value then there is none.

2) Can I return a pointer as a return value, and how do you do that?.

You can return any type you want once you declare it.

Code Select Expand

sub myproc1(), int
INT x
x=4
return x
endsub

sub myproc2(), string
string x
x="hello"
return x
endsub

sub myproc3(), pointer
pointer x
x= some memory location
return x
endsub

3) What is an ASCII string in Terminal Zero IWBasic?

I'm not sure what you are asking.
In IWBasic this is an ASCII string - "abcd"
In memory it would take up 5 memory locations with the last being 0x00.
All IWBasic strings are terminated with a NULL character internally.  That's why we don't have to ever say how long a string is when we pass it to a function.  In some C type library functions we usually have to tell it how long a string is because strings aren't always null terminated.