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stdin, stdout, stderr

momotaro
357 Contributor
Hello! am wondring if stdin, stdout and stderr are of any help since we can do the same thing using 'printf' for example:

Expand|Select|Wrap|Line Numbers
  1. fprintf(stdout, "%s", message);
  2.  
is exactely the same as:
Expand|Select|Wrap|Line Numbers
  1. fprintf(stderr, "%s", message);
  2.  
and yet:
Expand|Select|Wrap|Line Numbers
  1. printf("%s", message);
  2.  
and if you will talk about redirection of a std stream or 'freopen'
I will say that I could assigne a file from the begining...
please give some good reasons to go for the std streams and not for something else

thx!
Jul 31 '07 #1
2 3431
JosAH
11,448 Recognized Expert MVP
True, printf() assums the FILE* to be equal to stdout. Internally printf delegates
all the work to the vfprint() function and passes stdout to it. Do with it whatever
you like.

kind regards,

Jos
Jul 31 '07 #2
momotaro
357 Contributor
well in this case:
Expand|Select|Wrap|Line Numbers
  1. char message[] ="thank you";
  2. fprintf(stdout, "%s", message)
  3.  
Jul 31 '07 #3

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