Fortran error: Format-id refers to a non-format

[mricks]

I am new to Fortran and I am having an issue. Whenever I try to compile, I get an error on the second line:
Format-id refers to a non-format
<10> referenced


READ(5,*) NP,NRLP,IPRINT,NPP,G,Q0,N0,TLAST
WRITE(1,10) NP,NRLP,Q0,N0,TLAST,NPP


What does this error mean, and what is wrong with it?

Thanks,

 

[mikrom]

you need to declare format - something like

10 format(8f10.5)

or use write without format - something like

WRITE(*,*) NP,NRLP,Q0,N0,TLAST,NPP