Signed one-byte character data

Sample C usage (by Reference) Fortran subroutine

Sample C usage (by Reference)	Fortran subroutine
`#pragma linkage (cfort,FORTRAN) #include <stdio.h> void cfort(signed char *); main() { signed char x, y; x=-5; cfort(&x); printf ("Updated value in C: %d\n", x); }`	`SUBROUTINE CFORT ( ARG ) INTEGER1 ARG PRINT , 'FORTRAN ARG VALUE:', ARG ARG = ARG - 1 END`

#pragma linkage (cfort,FORTRAN)
#include <stdio.h>
void cfort(signed char *);
main()
{
signed char x, y;
  x=-5;
  cfort(&x);
  printf
    ("Updated value in C: %d\n", x);
}

SUBROUTINE CFORT ( ARG )
INTEGER*1 ARG
PRINT *, 'FORTRAN ARG VALUE:', ARG
ARG = ARG - 1
END