Intel(R) Fortran Language Reference (online version)

Data Transfer I/O Statements 10
See Also
• “I/O Control List” for details on I/O control-list specifiers
• “I/O Lists” for the general rules for I/O lists
• “Advance Specifier” for details on advancing I/O
Rules for Formatted Sequential WRITE Statements
Formatted, sequential WRITE statements translate data from binary to character form by using
format specifications for editing (if any). The translated data is written to an external file that is
connected for sequential access.
Values can be transferred from objects of intrinsic or derived types. For derived types, values of
intrinsic types are transferred from the components of intrinsic types that ultimately make up these
structured objects.
The output list and format specification must not specify more characters for a record than the
record size. (Record size is specified by RECL in an OPEN statement.)
If the file is connected for unformatted I/O, formatted data transfer is prohibited.
Example
The following example shows formatted, sequential WRITE statements:
WRITE (UNIT=8, FMT='(B)', ADVANCE='NO') C
WRITE (*, "(F6.5)", ERR=25, IOSTAT=IO_STATUS) A, B, C
Rules for List-Directed Sequential WRITE Statements
List-directed, sequential WRITE statements transfer data from binary to character form by using
the data types of the corresponding I/O list item to determine the form of the data. The translated
data is then written to an external file.
In general, values transferred as output have the same forms as values transferred as input.
Table 10-1 shows the default output formats for each intrinsic data type.
Table 10-1 Default Formats for List-Directed Output
Data Type
Output Format
BYTE
I5
LOGICAL(1)
L2
LOGICAL(2)
L2
LOGICAL(4)
L2
LOGICAL(8)
L2
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