INTEGER*2 X
X = 5
CALL CENTRY(X)
PRINT *,
1  'UPDATED VALUE IN FORTRAN:', X
END

extern "FORTRAN"
{ void centry(short int &); }
#include <stdio.h>
void centry(short int &x)
{
  printf("C int arg value: %d\n",x);
  x += 1;
}