How to use the exist feature with an if statement?

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Arvind Ganesh
Arvind Ganesh 2019-4-24
回答： Fangjun Jiang 2019-4-24
exist varname gives valid output. But if(exist varname) throws an error as "Unexpected matlab expression". How to fix this?

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Fangjun Jiang
Fangjun Jiang 2019-4-24
if exist('VarName','var')

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