@(#)ratfor.1 6.1 (Berkeley) 04/29/85

.AT 3 ratfor - rational Fortran dialect ratfor [ option ... ] [ filename ... ] Ratfor converts a rational dialect of Fortran into ordinary irrational Fortran. Ratfor provides control flow constructs essentially identical to those in C:

statement grouping:

{ statement; statement; statement }

decision-making:
if (condition) statement [ else statement ]

switch (integer value) {
 case integer: statement
 ...
 [ default: ] statement
}

loops:
while (condition) statement
for (expression; condition; expression) statement
do limits statement
repeat statement [ until (condition) ]
break
next

and some syntactic sugar to make programs easier to read and write:

free form input:
multiple statements/line; automatic continuation

comments:
# this is a comment

translation of relationals:
>, >=, etc., become .GT., .GE., etc.

return (expression)
returns expression to caller from function

define:
define name replacement

include:
include filename

Ratfor is best used with f77 (1). f77(1)

B. W. Kernighan and P. J. Plauger, "Software Tools" , Addison-Wesley, 1976.