IDENTIFICATION DIVISION.
PROGRAM-ID. COBRTN.
ENVIRONMENT DIVISION.
DATA DIVISION.
WORKING-STORAGE SECTION.
01 X COMP-2.
01 Y COMP-2.
PROCEDURE DIVISION.
       MOVE 3.14159265 TO X.
* X BY VALUE ***
       CALL "CENTRY" USING BY VALUE X
                 RETURNING Y.
       GOBACK.
END PROGRAM COBRTN.

#include <stdio.h>

double centry (double x)
{
  double y=4.14159265;
  printf("%f %f \n",x,y);
  return y;
}