Re: [Dev-C++] question about file

[Per W. <pw...@ia...>]

Your program isn't reading numbers from the file. It is reading
characters.

If your file constains "123" your program will add
'1' + '2' + '3' which is
49 + 50 + 51

Also, your program is adding the EOF return value. You should test for EOF
before adding...

If you want to convert a single ascii digit to it's integer value you have
to do (c - '0').

Also, since you haven't specified if your numbers may be more than
single-digit or if they are separated by something, we can't really help
with suggestions for better methods to read from the file.

/Per W

On Mon, 22 Nov 2004, Gabriel Alejand Ya=F1ez Lemus wrote:

> Hi!!
> I made a source code in C for read numbers from a file, plus them and sho=
w
> the result on screen.This is the code.
>
> #include <stdio.h>
> #include <stdlib.h>
>
> int main()
> {
>     FILE *nombre;
>     int c,a=3D0;
>
>     nombre =3D fopen("Prueba.txt", "r");
>
>     if (nombre =3D=3D NULL)
>     {
>         printf("El archivo no existe \n");
>         exit (EXIT_FAILURE);
>     }
>     else
>     {
>         do
>         {
>             c =3D getc(nombre);
>             a=3Da +c;
>
>         }
>         while (c !=3D EOF);
>     }
>     printf("%d",a);
>     fclose(nombre);
>
>     return EXIT_SUCCESS;
> }
>
> I don't know why this code doesn't work. The file "prueba.txt" contains
> the numbers 2 3 and 3.The program must do "2+3+3" and show on screen "8"
> but i don't know what's wrong, the program shows "151".
>
> Help me please!
>
> Anybody have a good day!
>
>
>
>
>
>
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