I try to define roughness by frghns.f and define a roughness between L1 to L1 region.
but when I wanna compile code I received this error:
Error: Operands of comparison operator ‘.eq.’ at (1) are INTEGER(4)/CHARACTER(2)
I found this is related to the name after .EQ. but I do not know how to handle it?
When I write the name without ’ and " the code will compile but when I write without Quotation means variable no string as the name of the region.
also I read this topic.
but it does not work for me