[Fortran] syntaxhighlighter_viewsource syntaxhighlighter_copycode Program subString
  implicit none
  character(len=20):: str = "hello, world!"
  write(*,*) str(2:2)
  write(*,*) str(2:7)
End program subString  
为啥会 
Warning:This argument's data type is incompatible with this intrinsic procedure; procedure assumed EXTERNAL.  [INT] 
报错:This name does not have a type, and must have an explicit type.   [INT] 
报错:Compilation Aborted (code 1) 
 
呢 
求解 
 
 
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