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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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NO, default is optional and you can omit it if there is no use of it.
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Experienced software professional, interested in teaching

It is not mandatory but will work as a safety net to catch all cases that were not caught by any of your conditions.
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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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Programming Trainer

It's a better practice, not a necessity.
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Oracle, Hindi, C++, C, MS Office, VBScript,JavaScript,Spoken English etc with 31 years of experience

yes
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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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VKTechnology

no
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Teacher

Yes
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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

Yes
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