RATFOR(1) UNIX Reference Manual RATFOR(1) NNAAMMEE rraattffoorr - rational Fortran dialect SSYYNNOOPPSSIISS rraattffoorr [_o_p_t_i_o_n ...] [_f_i_l_e_n_a_m_e ...] DDEESSCCRRIIPPTTIIOONN RRaattffoorr converts a rational dialect of Fortran into ordinary irrational Fortran. RRaattffoorr 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 RRaattffoorr is best used with f77(1). SSEEEE AALLSSOO f77(1) B. W. Kernighan and P. J. Plauger, _S_o_f_t_w_a_r_e _T_o_o_l_s, Addison-Wesley, 1976. HHIISSTTOORRYY RRaattffoorr appeared in Version 7 AT&T UNIX.