Spanish single characters recognized as multi-character

[Salvador Ramirez <sram at profc dot udec dot cl>]

Hello,

    I have a problem that I can reproduce with the following simple 
example:

--------
#include <stdio.h>
int main(void) {
   printf("%d - %c\n", 'ñ', 'ñ');
}
--------

 if I compile that program I get the following message warning from GCC:

warning: multi-character character constant

 for each time I use 'X' where X is either: á,é,í,ó,ú,ü or ñ, which are 
spanish characters non-ascii. So it seems that gcc does not recognize 
these characters as "single characters", but if so why? how could I 
correct the program the program above?

 I am using linux redhat 9.

Any help would be very appreciated,

---sram
Salvador Ramírez Flandes