Program that converts f77 to f90/95?

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A user inquired about a program that can convert Fortran 77 (F77) code to Fortran 90/95 (F90/95) due to receiving source code from a supervisor written in F77. It was noted that while F77 code is generally compatible with F90, F90 introduces new features that are not present in F77. The user expressed confidence that modifying the supervisor's F77 code in an F90 environment should not lead to errors, as F90 can compile F77 code, but not vice versa. The conversation highlighted the forward compatibility of Fortran versions, emphasizing that while F77 code can be run in F90, the reverse is not possible.
NoobixCube
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Hi all,
I was wondering whether there is a prgramme that converts f77 to f90/95? Because I am about to get source code from a supervisor, and I know f90 but he's written it in f77 :(
 
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Most (all ?) f77 code is also legal f90. F90 just adds new features.
 


You don't say. So if I were to modify my supervisor's code, hopefully I shouldn't run into any errors regarding the differing versions of FORTRAN?
 


You can compile f77 in f90, you can't compile f90 with f77. Time only goes forward.
 


mgb_phys said:
Time only goes forward.
very profound, thank you for your insight dear sir
 
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