32-bit signed binary integer with #pragma

IDENTIFICATION DIVISION.
PROGRAM-ID. COBRTN.
ENVIRONMENT DIVISION.
DATA DIVISION.
WORKING-STORAGE SECTION.
01 X PIC S9(9) BINARY.
01 Y PIC S9(9) BINARY.
PROCEDURE DIVISION.
       MOVE 1 TO X.
       MOVE 2 TO Y.
* X BY VALUE, Y BY REFERENCE ***
       CALL "CENTRY" USING BY CONTENT X
                 BY REFERENCE Y.
       GOBACK.
END PROGRAM COBRTN.

#pragma linkage (centry,COBOL)
#include <stdio.h>

void centry (int x, int *y)
{
  printf("%d %d \n",x,*y);
  return;
}