Re: problem with output of the program on different OS

On May 8, 9:20=A0am, pereges <Brol...@[EMAIL PROTECTED]
> wrote:
> I have a C program which I created on Windows machine. I have compiled
> and executed the program on windows machine and it gives me the
> consistent output every time i run it. for eg.
>
> input a =3D 2, b =3D3
>
> lets say a sum operation is to be performed, then:
>
> output: 5
>
> The output is always consistent and correct with regards to input.
>
> I tried to run the program on my linux machine. The program compiles
> and executes but I'm getting strange results. For eg. for the problem
> of addition above:
>
> input a =3D 2 b =3D 3
>
> output: 1
>
> i execute the program again:
>
> input a =3D 2 b =3D 3
>
> output: 6
>
> and again:
>
> input a =3D 2 b=3D 3
>
> output 0
>
> What is happening ?

Well, you can forget about the Windows version and just try some
debugging! Your program clearly isn't producing the output you expect.

Or, to save some work, compile with something like gcc with every
possible warning. Perhaps like:

gcc -W -Wall -ansi -pedantic -Wformat-nonliteral -Wcast-align -
Wpointer-arith -Wbad-function-cast -Wmissing-prototypes -Wstrict-
prototypes -Wmissing-declarations -Winline -Wundef -Wnested-externs -
Wcast-qual -Wshadow -Wconversion -Wwrite-strings -ffloat-store -fno-
builtin -O2 -g -pg YOURPROG.c

(with thanks to R. Heathfield).

Then it might give some clues as to what might be wrong. Maybe some
array is too small; just double each one. It might help, or it might
also hide the real error.

650 lines isn't very big, why many modules? Sometimes separating into
modules can introduce more errors. Perhaps try tem****arily combining
into one big file.

--
Bartc