Использование условных операторов

Операторы > Операторы программирования > Использование условных операторов

Условные операторы можно использовать для определения функций.

Вычислите условный оператор в точке следующим образом:

elseif	alsoif
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label-is-contextual="true">x</id> <real>2</real> </apply> </test> <then> <program> <localDefine> <apply> <indexer /> <id labels="VARIABLE" xml:space="preserve">R</id> <real>1</real> </apply> <str xml:space="preserve">x>2</str> </localDefine> </program> </then> </elseif> <elseif> <test> <apply> <greaterThan /> <id labels="VARIABLE" xml:space="preserve" label-is-contextual="true">x</id> <real>3</real> </apply> </test> <then> <program> <localDefine> <apply> <indexer /> <id labels="VARIABLE" xml:space="preserve">R</id> <real>2</real> </apply> <str xml:space="preserve">x>3</str> </localDefine> </program> </then> </elseif> <else> <program> <localDefine> <apply> <indexer /> <id labels="VARIABLE" xml:space="preserve">R</id> <real>3</real> </apply> <str xml:space="preserve">else</str> </localDefine> </program> </else> </if> <id labels="VARIABLE" xml:space="preserve" label-is-contextual="true">R</id> </program> </define> </math> </region> <region id="ID0EIACS" top="57.600000000000009" left="288.00000000000006" height="81.4" width="116.48333333333335" xmlns="http://schemas.mathsoft.com/worksheet50"> <math resultRef="25"> <eval xmlns="http://schemas.mathsoft.com/math50"> <apply> <id labels="VARIABLE" xml:space="preserve" label-is-contextual="true">f</id> <real>0</real> </apply> <unitOverride> <placeholder /> </unitOverride> </eval> </math> </region> <region id="ID0ERACS" top="153.60000000000002" left="288.00000000000006" height="81.4" width="116.48333333333335" xmlns="http://schemas.mathsoft.com/worksheet50"> <math resultRef="27"> <eval xmlns="http://schemas.mathsoft.com/math50"> <apply> <id labels="VARIABLE" xml:space="preserve" label-is-contextual="true">f</id> <real>1</real> </apply> <unitOverride> <placeholder /> </unitOverride> </eval> </math> </region> <region id="ID0E6ACS" top="249.60000000000002" left="288.00000000000006" height="81.4" width="118.11000000000001" xmlns="http://schemas.mathsoft.com/worksheet50"> <math resultRef="29"> <eval xmlns="http://schemas.mathsoft.com/math50"> <apply> <id labels="VARIABLE" xml:space="preserve" label-is-contextual="true">f</id> <real>2</real> </apply> <unitOverride> <placeholder /> </unitOverride> </eval> </math> </region> <region id="ID0EIBCS" top="345.6" left="288.00000000000006" height="81.4" width="118.11000000000001" xmlns="http://schemas.mathsoft.com/worksheet50"> <math resultRef="31"> <eval xmlns="http://schemas.mathsoft.com/math50"> <apply> <id labels="VARIABLE" xml:space="preserve" label-is-contextual="true">f</id> <real>3</real> </apply> <unitOverride> <placeholder /> </unitOverride> </eval> </math> </region> <region id="ID0EWBCS" top="441.60000000000008" left="288.00000000000006" height="81.4" width="118.11000000000001" xmlns="http://schemas.mathsoft.com/worksheet50"> <math resultRef="33"> <eval xmlns="http://schemas.mathsoft.com/math50"> <apply> <id labels="VARIABLE" xml:space="preserve" label-is-contextual="true">f</id> <real>4</real> </apply> <unitOverride> <placeholder /> </unitOverride> </eval> </math> </region>	<region id="ID0EKCCS" top="556.80000000000007" left="57.600000000000009" height="282.00000000000006" width="172.01333333333335" xmlns="http://schemas.mathsoft.com/worksheet50"> <math resultRef="35"> <define xmlns="http://schemas.mathsoft.com/math50"> <function> <id labels="VARIABLE" xml:space="preserve">f</id> <boundVars> <id labels="VARIABLE" xml:space="preserve">x</id> </boundVars> </function> <program> <localDefine> <apply> <indexer /> <id labels="VARIABLE" xml:space="preserve">R</id> <real>3</real> </apply> <real>0</real> </localDefine> <if> <test> <apply> <greaterThan /> <id labels="VARIABLE" xml:space="preserve" label-is-contextual="true">x</id> <real>1</real> </apply> </test> <then> <program> <localDefine> <apply> <indexer /> <id labels="VARIABLE" xml:space="preserve">R</id> <real>0</real> </apply> <str xml:space="preserve">x>1</str> </localDefine> </program> </then> <alsoif> <test> <apply> <greaterThan /> <id labels="VARIABLE" xml:space="preserve" label-is-contextual="true">x</id> <real>2</real> </apply> </test> <then> <program> <localDefine> <apply> <indexer /> <id labels="VARIABLE" xml:space="preserve">R</id> <real>1</real> </apply> <str xml:space="preserve">x>2</str> </localDefine> </program> </then> </alsoif> <alsoif> <test> <apply> <greaterThan /> <id labels="VARIABLE" xml:space="preserve" label-is-contextual="true">x</id> <real>3</real> </apply> </test> <then> <program> <localDefine> <apply> <indexer /> <id labels="VARIABLE" xml:space="preserve">R</id> <real>2</real> </apply> <str xml:space="preserve">x>3</str> </localDefine> </program> </then> </alsoif> <else> <program> <localDefine> <apply> <indexer /> <id labels="VARIABLE" xml:space="preserve">R</id> <real>3</real> </apply> <str xml:space="preserve">else</str> </localDefine> </program> </else> </if> <id labels="VARIABLE" xml:space="preserve" label-is-contextual="true">R</id> </program> </define> <resultFormat> <matrix size="12,12" offset="0,0" show-indices="false" expand-nested-arrays="false" /> </resultFormat> </math> </region> <region id="ID0EYCCS" top="576.00000000000011" left="288.00000000000006" height="81.4" width="116.48333333333335" xmlns="http://schemas.mathsoft.com/worksheet50"> <math resultRef="37"> <eval xmlns="http://schemas.mathsoft.com/math50"> <apply> <id labels="VARIABLE" xml:space="preserve" label-is-contextual="true">f</id> <real>0</real> </apply> <unitOverride> <placeholder /> </unitOverride> </eval> <resultFormat> <matrix size="12,12" offset="0,0" show-indices="false" expand-nested-arrays="false" /> </resultFormat> </math> </region> <region id="ID0EBDCS" top="672.00000000000011" left="288.00000000000006" height="81.4" width="116.48333333333335" xmlns="http://schemas.mathsoft.com/worksheet50"> <math resultRef="39"> <eval xmlns="http://schemas.mathsoft.com/math50"> <apply> <id labels="VARIABLE" xml:space="preserve" label-is-contextual="true">f</id> <real>1</real> </apply> <unitOverride> <placeholder /> </unitOverride> </eval> <resultFormat> <matrix size="12,12" offset="0,0" show-indices="false" expand-nested-arrays="false" /> </resultFormat> </math> </region> <region id="ID0EPDCS" top="768.00000000000011" left="288.00000000000006" height="81.4" width="118.11000000000001" xmlns="http://schemas.mathsoft.com/worksheet50"> <math resultRef="41"> <eval xmlns="http://schemas.mathsoft.com/math50"> <apply> <id labels="VARIABLE" xml:space="preserve" label-is-contextual="true">f</id> <real>2</real> </apply> <unitOverride> <placeholder /> </unitOverride> </eval> <resultFormat> <matrix size="12,12" offset="0,0" show-indices="false" expand-nested-arrays="false" /> </resultFormat> </math> </region> <region id="ID0EYDCS" top="864.00000000000011" left="288.00000000000006" height="81.4" width="118.11000000000001" xmlns="http://schemas.mathsoft.com/worksheet50"> <math resultRef="43"> <eval xmlns="http://schemas.mathsoft.com/math50"> <apply> <id labels="VARIABLE" xml:space="preserve" label-is-contextual="true">f</id> <real>3</real> </apply> <unitOverride> <placeholder /> </unitOverride> </eval> <resultFormat> <matrix size="12,12" offset="0,0" show-indices="false" expand-nested-arrays="false" /> </resultFormat> </math> </region> <region id="ID0EGECS" top="960.00000000000011" left="288.00000000000006" height="81.4" width="118.11000000000001" xmlns="http://schemas.mathsoft.com/worksheet50"> <math resultRef="45"> <eval xmlns="http://schemas.mathsoft.com/math50"> <apply> <id labels="VARIABLE" xml:space="preserve" label-is-contextual="true">f</id> <real>4</real> </apply> <unitOverride> <placeholder /> </unitOverride> </eval> <resultFormat> <matrix size="12,12" offset="0,0" show-indices="false" expand-nested-arrays="false" /> </resultFormat> </math> </region>

elseif

alsoif

Щелкните для копирования этого выражения

Если используется оператор elseif, выполнение программы прекращается на первом операторе, в котором выполняется заданное условие. Если используется оператор alsoif, все операторы alsoif будут выполнены до конца. Если хотя бы в одном из них условие будет выполнено, все последующие операторы else выполняться не будут.

Смотрите видео об использовании условных операторов:

Похожие темы

Условные операторы

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