Re: calling C from fortran

dear fj, while i am running the code by c-p your code, i am getting
error promp:

$ gcc -c operating_system.c
$ gfortran test.f90 operating_system.o
test.f90:6.24:

       USE iso_c_binding
                       1
test.f90:5.31:

BIND(C,name="operating_system")
                              2
Error: USE statement at (1) cannot follow attribute declaration
statement at (2)
test.f90:7.15:

       INTEGER(C_INT) :: r
              1
Error: Parameter 'c_int' at (1) has not been declared or is a
variable, which does not reduce to a constant expression
test.f90:13.6:

  bit=operating_system()
     1
f951: internal compiler error: Segmentation fault
Please submit a full bug re****t,
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See <http://gcc.gnu.org/bugs.html>
for instructions.

while gfortran is 4.4    ....will you plz check thes?