#include <stdio.h>
#include <dos.h>

void main( void )
{
#if defined(__NT__) || \
  ( defined(__OS2__) && \
        (defined(__386__) || defined(__PPC__)) )
    void *segment;
#else
    unsigned segment;
#endif

    /* Try to allocate 100 paragraphs, then free them */
    if( _dos_allocmem( 100, &segment ) != 0 ) {
        printf( "_dos_allocmem failed\n" );
        printf( "Only %u paragraphs available\n",
                 segment );
    } else {
        printf( "_dos_allocmem succeeded\n" );
        if( _dos_freemem( segment ) != 0 ) {
            printf( "_dos_freemem failed\n" );
        } else {
            printf( "_dos_freemem succeeded\n" );
        }
    }
}