Why is my code not running? i am not able to understand what is the error

hello @Usha24
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if u running on cb ide then these that ifdef section from ur code.

also use k and n to declare ur array

the problem is i am getting ( requirred from here error )

how to error this error,cant able to figure out

count = remove*

someone please reply

@Usha24
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here u have to define ur own comparator because elementIinfo is custom class.

pls refer this->