Dear Jamyangpalden,
The eror is : Linking... Creating library Debug/trnlib.lib and object Debug/trnlib.exp TYPE104.obj : error LNK2001: unresolved external symbol _INPUT@4 c:\trnsys15\trnlib.dll : fatal error LNK1120: 1 unresolved externals Error executing link.exe.
I believe that this error indicates that the Fortran Developers Studio was unable to link Type104 into trnlib.dll with the rest of the TRNSYS code because it cannot find what it thinks is an external subroutine or a function called INPUT. I am not familiar with Type104 and so cannot be certain but the "unresolved external" means that the linker was looking for and cannot find some routine or variable that is referenced by the code.
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