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C Language > Learn C Language > Is a default case necessary in a switch statement?
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Is a default case necessary in a switch statement?

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Training Centre

NO, default is optional and you can omit it if there is no use of it.
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Technology expert

Yes.If non of the conditions matches with the case ,it has to goto default.
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Computer & Maths Professor

No it is optional
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Doing mathematics & computing from IIT Delhi

No.
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VKTechnology

no
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B.Tech

when you want to execute default set of statements you will use default case.Its not mandatory.depends based upon program rerquirement.
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I am a teacher.

default in switch is not mandatory. But its good practice to have default in code, in case if you decided default behavior of the logic when above cases doesn't match. As well it is useful, if the value being matched is decided at run time. For e.g. share price, petrol price, temperature etc.. In these...
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default in switch is not mandatory. But its good practice to have default in code, in case if you decided default behavior of the logic when above cases doesn't match. As well it is useful, if the value being matched is decided at run time. For e.g. share price, petrol price, temperature etc.. In these cases, its better to have default case, as you can't predict the fixed value in advance while writing program. Hope you understood. You can come back if you still need more clarifications. read less
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Tuition Teacher

No But for good programming default is put to handle default actions and to catch any unexpected value.
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Tutor

If there is no default: label and none of the case labels match the "switched" value, then none of the controlled compound statement will be executed.
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Tutor

Yes
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