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Chapter 11 Flow Control Statements

11-19

SELECT CASE (Statement)

Function

Executes a plural condition decision.

Format

SELECT CASE <Expression>

CASE <Item>[,<Item>...]

[CASE ELSE]

END SELECT

Explanation

This statement executes a series of instructions after CASE if the value of

<Expression> matches <Item> of the CASE statement.

An arithmetic expression or character string can be designated for

<Expression>.

A variable, a constant, an expression or a conditional expression can be

designated for <Item>.

A conditional expression can be designated as follows.

• <Arithmetic expression 1> TO < Arithmetic expression 2>

The result of <Expression> is checked if it is <Arithmetic expression 1> or

higher, or if it is <Arithmetic expression 2> or lower.

• This statement cannot be used in the case of a character string.

IS <Comparison operator><Arithmetic expression>

The result of <Expression> and the value of <Arithmetic expression> are

compared.

In the case of a character string, <Comparison operator> is “ = ”.

A CASE ELSE statement is executed if all CASE statements are not satisfied.

A CASE ELSE statement must be put before an END SELECT statement.

Related Terms

IF-END IF

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