what's wrong with this macro?

[Wener]

#include <stdio.h>
#define P( fmt...)    printf( ##fmt)
#define FP( fmt...)    fprintf( stderr, ##fmt)
#define PP( fmt...)    printf( "Wen%d\n",##fmt)
int main(int argc, char *argv[])
{
    PP(520);
    FP("Xiao %d\n", 520);
    P("Wener%d",520);/* this not work */
/*
test2.c:9:1: error: pasting "(" and ""Wener%d"" does not give a valid preprocessing token
*/
    return 0;
}

[Wener]

sorry i made a mistake

it should be
#define P( fmt...) printf( fmt)
/* it works */

[std10093]

If you use this

#define P( fmt...)    fprintf( stdout,##fmt)

it will be ok

EDIt - sam is too slow

[root4]

Why the ##? ## is used to paste parts of a single token, you don't want that, just remove the double ## everywhere in your macros.