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 HP Fortran 90 Programmer's Reference: HP Fortran 90 Programmer's Reference > Chapter 10 HP Fortran 90 statements

IF (logical)
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Conditionally executes a statement.

Syntax

IF (logical-expression) statement
logical-expression

is a logical expression.

statement

is any executable statement other than the following:

  • A statement used to begin a construct

  • Any END statement

  • Any IF statement

Description

The logical IF statement is a two-way decision maker. If logical-expression evaluates to is true, statement executes and control passes to the next statement. If logical-expression evaluates to false, statement does not execute and control passes to the next statement in the program.

Examples

IF (a .EQ. b) PRINT *, "They are equal."

Related statements

IF (arithmetic) and IF (construct)

Related concepts

For information about flow control statements, see “Flow control statements”.



IF (block)
  		 


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