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# IF

#### Structured Mode Syntax

`IF` logical-condition
[`THEN`] statement
[`ELSE` statement ]
`END-IF`

#### Reporting Mode Syntax

`IF` logical-condition
[`THEN`] |  | statement |  |
`DO` statement `DOEND`
| `ELSE` |  | statement |  |
`DO` statement `DOEND`

This document covers the following topics:

- IF Usage

- IF Syntax Description

- IF Example

For an explanation of the symbols used in the syntax diagram, see Syntax Symbols.

Related Statements: `DECIDE FOR` | `DECIDE ON` | `IF SELECTION` | `ON ERROR`

Belongs to Function Group: Processing of Logical Conditions

## IF Usage

The `IF` statement is used to control execution of a statement or group of statements based on a logical condition.

Note
If no action is to be performed in case the condition is met, you must specify the statement `IGNORE` in the `THEN` clause.

## IF Syntax Description

Syntax Element | Description
--- | ---
`IF logical-condition` | Logical Condition Criterion: The logical condition which is used to determine whether the statement or statements specified with the `IF` statement are to be executed. Examples:
    IF #A = #B
    IF LEAVE-TAKEN GT 30
    IF #SALARY(1) * 1.15 GT 5000
    IF SALARY (4) = 5000 THRU 6000
    IF DEPT = 'A10' OR = 'A20' OR = 'A30'
For further information, see the section Logical Condition Criteria (in the Programming Guide).
`THEN statement` | THEN Clause: In the `THEN` clause, you specify the statement(s) to be executed if the logical condition is true.
`ELSE statement` | ELSE Clause: In the `ELSE` clause, you specify the statement(s) to be executed if the logical condition is not true.
`END-IF` | END of IF Statement: In structured mode, the Natural reserved word `END-IF` must be used to end the `IF` statement. In reporting mode, use the `DO ... DOEND` statements to supply one or several suitable statements, depending on the situation, and to end the clauses and the `IF` statement. If you specify only a single statement, you can omit the `DO ... DOEND` statements. With respect to good coding practice, this is not recommended.
`statement` `DO statement ... DOEND`

## IF Example

    ** Example 'IFEX1S': IF (structured mode)
    ************************************************************************
    DEFINE DATA LOCAL
    1 EMPLOY-VIEW VIEW OF EMPLOYEES
      2 PERSONNEL-ID
      2 NAME
      2 FIRST-NAME
      2 SALARY (1)
      2 BIRTH
    1 VEHIC-VIEW VIEW OF VEHICLES
      2 PERSONNEL-ID
      2 MAKE
    *
    1 #BIRTH (D)
    END-DEFINE
    *
    MOVE EDITED '19450101' TO #BIRTH (EM=YYYYMMDD)
    SUSPEND IDENTICAL SUPPRESS
    LIMIT 20
    *
    FND. FIND EMPLOY-VIEW WITH CITY = 'FRANKFURT'
              SORTED BY NAME BIRTH
      IF SALARY (1) LT 40000
        WRITE NOTITLE '*****' NAME 30X 'SALARY LT 40000'
      ELSE
        IF BIRTH GT #BIRTH
          FIND VEHIC-VIEW WITH PERSONNEL-ID = PERSONNEL-ID (FND.)
            DISPLAY (IS=ON)
                    NAME BIRTH (EM=YYYY-MM-DD)
                    SALARY (1) MAKE (AL=8)
          END-FIND
        END-IF
      END-IF
    END-FIND
    END

#### Output of Program IFEX1S:

            NAME            DATE      ANNUAL     MAKE
                             OF       SALARY
                           BIRTH
    -------------------- ---------- ---------- --------

    BAECKER              1956-01-05      74400 BMW
    ***** BECKER                                            SALARY LT 40000
    BLOEMER              1979-11-07      45200 FIAT
    FALTER               1954-05-23      70800 FORD
    ***** FALTER                                            SALARY LT 40000
    ***** GROTHE                                            SALARY LT 40000
    ***** HEILBROCK                                         SALARY LT 40000
    ***** HESCHMANN                                         SALARY LT 40000
    HUCH                 1952-09-12      67200 MERCEDES
    ***** KICKSTEIN                                         SALARY LT 40000
    ***** KLEENE                                            SALARY LT 40000
    ***** KRAMER                                            SALARY LT 40000

Equivalent reporting-mode example: IFEX1R.

### On this page

- IF Usage
- IF Syntax Description
- IF Example