Operator Reference

HALCON Operator Reference / Control

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ClassesClasses | | Operators

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ififIfIfif (Operator)

ififIfIfif — Conditional statement.

Signature

if( : : Condition : )

Herror if(const Hlong Condition)

Herror T_if(const Htuple Condition)

void If(const HTuple& Condition)

static void HOperatorSet.If(HTuple condition)

def if(condition: int) -> None

Description

ififIfIfif is a conditional statement that starts an if block. The ConditionConditionConditionconditioncondition parameter must evaluate to a Boolean or integer expression.

If ConditionConditionConditionconditioncondition evaluates to 'true'"true""true""true""true" (not 0), the following block body up to the next corresponding block statement elseifelseifElseifElseifelseif, elseelseElseElseelse, or endifendifEndifEndifendif is executed. Reaching the end of the block the execution continues after the corresponding endifendifEndifEndifendif statement.

If ConditionConditionConditionconditioncondition evaluates to 'false'"false""false""false""false" (0), the execution is continued at the next corresponding block statement elseifelseifElseifElseifelseif, elseelseElseElseelse, or endifendifEndifEndifendif.

Parameters

ConditionConditionConditionconditioncondition (input_control)  integer → HTupleintHTupleHtuple (integer) (int / long) (Hlong) (Hlong)

Condition for the if statement.

Default: 1

Result

If the condition is correct ififIfIfif (as operator) returns 2 ( H_MSG_TRUE) . Otherwise, an exception is raised and an error code returned.

Alternatives

elseifelseifElseifElseifelseif, elseelseElseElseelse

See also

forforForForfor, whilewhileWhileWhilewhile, untiluntilUntilUntiluntil

Module

Foundation

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ClassesClasses | | Operators