Unquoted Strings

f77 list-directed I/O allows reading of a string not enclosed in quotes. @

The string must not start with a digit, and cannot contain separators (commas or slashes (/)) or whitespace (spaces or tabs). A newline terminates the string unless escaped with a backslash (\). Any string not meeting the above restrictions must be enclosed in single or double quotes.

Example: List-directed input of unquoted strings:

	CHARACTER C*6, S*8 
	READ *, I, C, N, S 
	PRINT *, I, C, N, S 
	END 

The above program, unquoted.f, reads and displays as follows:

demo% a.out 
23 label 82 locked 
  23label 82locked 
demo%