#replace "program main_name by subroutine user\_main (and the end clause as well)"
sed 's/[[:space:]]*program[[:space:]]*\([a-zA-Z0-9\-\_]*\)/subroutine user\_main /gI;s/[[:space:]]*use[[:space:]]*mpi/\include \"mpif\.h\" /gI' ${ARG} > ${TMPFILE}
SRCFILE="${TMPFILE}"
#replace "program main_name by subroutine user\_main (and the end clause as well)"
sed 's/[[:space:]]*program[[:space:]]*\([a-zA-Z0-9\-\_]*\)/subroutine user\_main /gI;s/[[:space:]]*use[[:space:]]*mpi/\include \"mpif\.h\" /gI' ${ARG} > ${TMPFILE}
SRCFILE="${TMPFILE}"