#ifdef NOT_C
# skip C code for Perl, Ruby and Bash
false && $skipme = <<END ;
#endif

#include <stdio.h>

/* C */
int
main (int argc, char **argv)
{
  printf ("Hello, world!\n");

  return 0;
}

#ifdef NOT_C

END

# For Perl and Ruby [ ] means an array/vector, which is true, but for
# Bash it means to evaluate the expression which is false so the
# command is skipped
[ 1 == 2 ] && \
( print "Hello, world!\n" );

# For Bash, the arguments to eval are concatenated and given to the
# true command and so are ignored, but for Perl and Ruby the 'unless'
# part is a separate clause which causes the whole eval command to be
# skipped
eval 'echo "Hello, world!" ; true' unless 1;

#endif