Open Watcom FORTRAN 77 Language Reference

FORTRAN Statements
2.69 READ Statement
Three forms of the READ statement are supported by Open Watcom FORTRAN 77.
2.69.1 Standard READ Statement
READ (cilist) [ilist]
READ f [,ilist]
where:
cilist
is a control information list of specifiers separated by commas:
[UNIT =] u
[FMT =] f
REC = rn
IOSTAT = ios
ERR = s
END = s
f
ilist
is a format identifier.
is an optional input list.
2.69.2 Extended READ Statement
READ, ilist
where:
ilist
is an input list.
2.69.3 Description of READ Statement
The READ statement is used to transfer data from a device or file into the executing FORTRAN program.
As shown above, Open Watcom FORTRAN 77 supports three forms of the READ statement.
Control Information List and Format Identifier
[UNIT =] u
u is an external unit identifier or an internal file identifier.
1. An external unit identifier is a non-negative integer expression or an asterisk
(*) in which case unit 5 is assumed.
READ Statement 123