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#include <stdlib.h>
#include <stdio.h>
#include <string.h>

typedef struct string_header_s 
{  short length; 
   char string[ 1 ];
} string_header_t;

char bigblock[ 100000 ];
char * here = bigblock;

string_header_t * string_allocate( long length )
{  char * place = here;;
   if ( ( place = here + length + sizeof (string_header_t) ) >= bigblock + 100000 )
   {  return NULL;
   }
   here = place;
   ( (string_header_t *) place )->length = length;
   return (string_header_t *) place;
}

string_header_t * string_save( char string[] )
{  long length = strlen( string );
   string_header_t * headerp = string_allocate( length );
   memcpy( headerp->string, string, length );
   headerp->string[ length ] = '\0';
   return headerp;
}

void print_string( string_header_t * header )
{  int i;
   for ( i = 0; i < header->length; ++i )
   {  putchar( header->string[ i ] );
   }   
}


int main ( int argc, char * argv[] )
{  string_header_t * thing;

puts( "before thing" );

   thing = string_save( "hello" );

puts( "after thing" );

   /* ... */ 

   print_string( thing );
   putchar( '\n' );

   return EXIT_SUCCESS;
}