Intel® Fortran Compiler Classic and Intel® Fortran Compiler Developer Guide and Reference

ID 767251
Date 11/07/2023
Public

A newer version of this document is available. Customers should click here to go to the newest version.

Document Table of Contents

Nested and Group Repeat Specifications

Format specifications can include nested format specifications enclosed in parentheses; for example:

15   FORMAT (E7.2,I8,I2,(A5,I6))
35   FORMAT (A6,(L8(3I2)),A)

A group repeat specification can precede a nested group of edit descriptors; it can be an unsigned integer literal constant, a variable format expression, or * to indicate an unlimited repeat count. For example, the following statements are equivalent, and the second statement shows a group repeat specification:

50   FORMAT (I8,I8,F8.3,E15.7,F8.3,E15.7,F8.3,E15.7,I5,I5)
50   FORMAT (2I8,3(F8.3,E15.7),2I5)

If a nested group does not show a repeat count, a default count of 1 is assumed.

Normally, the string edit descriptors and control edit descriptors cannot be repeated (except for slash), but any of these descriptors can be enclosed in parentheses and preceded by a group repeat specification. For example, the following statements are valid:

76   FORMAT ('MONTHLY',3('TOTAL'))
100  FORMAT (I8,4(T7),A4)

Each of the following can be used to read data at the end of an input record into N elements of array A:

    read (10,'(<N>F8.2)') A(1:N)  ! Variable format expression
    read(10,'(*(F8.2))') A(1:N)   ! Unlimited repeat count

See Also