FORTRAN Reference Manual

FORTRAN Reference Manual—528615-001
6-1
6 Introduction to Statements
This section provides introductory information to Section 7, Statements. Topics covered
in this section include:
Executable and Nonexecutable Statements
A FORTRAN statement is either executable or nonexecutable.
•
An executable statement causes the FORTRAN compiler to generate machine
instructions that execute when you run your program.
•
A nonexecutable statement provides information that controls how the FORTRAN
compiler compiles your program.
Table 6-1 lists the FORTRAN executable and nonexecutable statements.
Topic Page
Executable and Nonexecutable Statements
6-1
Statement Types 6-3
Statement Order 6-4
Statement Labels 6-5
Error Numbers 6-5
Table 6-1. FORTRAN Statements (page 1 of 3)
Statement
Executable or
Nonexecutable Type Described Under
ASSIGN Executable Assignment ASSIGN
BACKSPACE Executable I/O BACKSPACE
BLOCK DATA Nonexecutable Program Unit BLOCK DATA
CALL Executable Control CALL
CHARACTER Nonexecutable Specification CHARACTER
CHECKPOINT Executable Control CHECKPOINT
CLOSE Executable I/O CLOSE
COMMON Nonexecutable Specification COMMON
COMPLEX Nonexecutable Specification Type Declaration
CONTINUE Executable Control CONTINUE
DATA Nonexecutable Assignment DATA
DIMENSION Nonexecutable Specification DIMENSION
DO Executable Control DO
DOUBLE
PRECISION
Nonexecutable Specification Type Declaration