#define XXX {fprintf(stdout,"\n@@@ %d %d %d @@@ ",__LINE__,i,j);};
#define YYY fprintf(stdout,"\n@@@ %d %d %d @@@ ",__LINE__,i,j),
    #include <stdio.h>
    main() {
      int i, j;
XXX   for(i=0; i<2; i++) {
XXX     for(j=0; j<4; j++) {
XXX       printf("KSU ");
        }
XXX     printf("\n");
      }
XXX   return 0;
    }