Trigraph sequences

[Peteris Krumins]

Hello,

while reading through iso c standard (August 3, 1998), I noticed
something I had never heard of in C: "Trigraph sequences", 5.2.1.1

The standard says:
"All occurrences in a source file of the following sequences of
three characters (called trigraph sequences)) are replaced with
the corresponding single character."

EXAMPLE

The following source line
printf("Eh???/n");

becomes (after replacement of the trigraph sequence ??/)
printf("Eh?\n");

Does this mean i can write something as obfuscated as:

--
??=include <stdio.h>

int
main(void)
??<
printf("hello world??\n");
??>

 

[Andreas Kahari]

Does this mean i can write something as obfuscated as:

[code using trigraphs]


Yes.

 

[Scott Fluhrer]

[cut]
Does this mean i can write something as obfuscated as:

[code using trigraphs]


Yes.
[/QUOTE]
Of course, it doesn't mean you *should*.