🚀 go-pugleaf

spasm wrote:
> 1. Error (future) 355: "Main3.C", line 46 # Function 'main' must return
> type 'int'.
>     void main()
>          ^^^^

I think Chuck spoke about this in class.  The new standard is for main
to return an int to tell the OS that it has executed successfully.  Just
change void main() to int main() and add return 1; to the end of main. 
(I think 1 means okay, 0 means there was an error.)


> 2. Error 409: "Main3.C", line 128 # Cannot convert a non-lvalue to a
> pointer.
> 
> if(strcmp((LIST_Get(list,j)).name,(LIST_Get(list,index)).name) >
> 0)                        ^^^^^^^^^^^^^^^^^^^^^^
> 
> 3. Error 409: "Main3.C", line 128 # Cannot convert a non-lvalue to a
> pointer.
> 
> if(strcmp((LIST_Get(list,j)).name,(LIST_Get(list,index)).name) >
> 0)
> ^^^^^^^^^^^^^^^^^^^^^^^^^^

I'm not sure that this makes sense for the error, but LIST_Get should
return type LISTdata; make sure it's LISTdata and not a pointer to
LISTdata.  I would think this would have given you errors under CC too
though.

Try compiling with g++ too.  I find that sometimes different compilers
will give more understandable errors.

Good luck.
-- 
Adam
carheden@holly.colostate.edu
http://holly.ColoState.edu/~carheden

spasm <spasm@holly.colostate.edu> wrote:
: Using the old CC command to compile my assignment #3 program, I recieved
: no errors and achieved the desired output. Using the new aCC command to
: compile my program, I get the following errors:

: 1. Error (future) 355: "Main3.C", line 46 # Function 'main' must return
: type 'int'.
:     void main()
:          ^^^^
aCC is a stricter compiler .. so U need to return a value before exiting
So use int main() instead of void main()
       ^^^                   ^^^^
and before u exit from the main, use 
return(1) ---> for abnormal termination
return(0) ---> for normal termination

: 2. Error 409: "Main3.C", line 128 # Cannot convert a non-lvalue to a
: pointer.

: if(strcmp((LIST_Get(list,j)).name,(LIST_Get(list,index)).name) >
: 0)                        ^^^^^^^^^^^^^^^^^^^^^^

Yep .. this doesn't work with aCC ..
U need to assign LIST_Get(list,j).name to a termorary character string
and then compare the temp string.
It works with aCC tho.

: 3. Error 409: "Main3.C", line 128 # Cannot convert a non-lvalue to a
: pointer.

: if(strcmp((LIST_Get(list,j)).name,(LIST_Get(list,index)).name) >
: 0)
: ^^^^^^^^^^^^^^^^^^^^^^^^^^
Same as above

: 4. Warning:        1 future errors were detected and ignored. Add a '+p'
: option to
: detect and fix them before they become fatal errors in a future release.
: Behavio
: r of this ill-formed program is not guaranteed to match that of a
: well-formed pr
: ogram

: After adding the '+p' option, error 355 is gone. The file Main3.C is
: supposed to compile, so I'm guessing that there is something in my SLL.h
: and ArrD.h files that is causing the problem. I get the same errors
: including either SLL.h or ArrD.h in Main3.C. Any ideas as to what could
: be causing this.

: Thanx,
:     Chris Carlson


-- 
VISHWANATH PARAKALA
__________________________________________________________________________
Home Page: http://www.cs.colostate.edu/~vishu
finger   : vishu@schubert.cs.colostate.edu

spasm (spasm@holly.colostate.edu) wrote:
: Using the old CC command to compile my assignment #3 program, I recieved
: no errors and achieved the desired output. Using the new aCC command to
: compile my program, I get the following errors:

On an HP machine, CC should only be used for backward compatibility
for legacy applications.  This is not what you folks are doing.  I
encourage you to only use aCC, unless you have specific instructions
otherwise.

aCC more closely tracks the ISO standard for C++, although it is not
yet conformant.

: 1. Error (future) 355: "Main3.C", line 46 # Function 'main' must return
: type 'int'.
:     void main()
:          ^^^^

In Standard C++, there are two legal signatures for main:
   int main()
   int main(int argc, char** argv)

However, your main function does not have to actually return a value
(for backward compatibility with older C++ apps).  Falling out of main
without a return is the same as returning zero.

: 2. Error 409: "Main3.C", line 128 # Cannot convert a non-lvalue to a
: pointer.

: if(strcmp((LIST_Get(list,j)).name,(LIST_Get(list,index)).name) >
: 0)                        ^^^^^^^^^^^^^^^^^^^^^^

: 3. Error 409: "Main3.C", line 128 # Cannot convert a non-lvalue to a
: pointer.

: if(strcmp((LIST_Get(list,j)).name,(LIST_Get(list,index)).name) >
: 0)
: ^^^^^^^^^^^^^^^^^^^^^^^^^^

These are the same error, dressed differently.  I'd have to see the
spec for LIST_Get, but it appears to be returning a struct/class type
by value, where the name field is of type char*.  (This is just my
guess from the code shown)

An un-named temporary, which includes things returned by value from
functions, is not an lvalue.  An lvalue is something that can appear
on the left hand side of an assignment operator, a "left value." 
Variables are lvalues, for example.  Taking the address of a temporary
is bad, since the temporary won't outlive the expression.

Again, this is just my best guess.  Without more context, it's hard
to tell.

    Ken Shrum