EXIT Statement

Syntax

EXIT [name]

name	(Optional) Is the name of the DO construct.

Description

The EXIT statement causes execution of the named (or innermost) DO construct to be terminated.

If a DO construct name is specified, the EXIT statement must be within the range of that construct.

Any DO variable present retains its last defined value.

An EXIT statement can be labeled, but it cannot be used to terminate a DO construct.

An EXIT statement must not appear within a CRITICAL or DO CONCURRENT construct if it belongs to that construct or an outer construct.

Example

The following example shows an EXIT statement:

LOOP_A : DO I = 1, 15

  N = N + 1

  IF (N > I) EXIT LOOP_A

END DO LOOP_A

The following shows another example:

CC  See CYCLE.F90 in the TBD for an example of EXIT in nested

CC  DO loops

CC  Loop terminates early if one of the data points is zero:

CC

    INTEGER numpoints, point

    REAL datarray(1000), sum

    sum = 0.0

    DO point = 1, 1000

      sum = sum + datarray(point)

      IF (datarray(point+1) .EQ. 0.0) EXIT

    END DO