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2. Write a "check" function to calculate the check digit, and compare it to the final barcode digit. If the digits match, output the barcode with the message Hvalidated." If not, output the barcode with the message "error in barcode." Also, output with labels the results from steps 1 and 2 of the check-digit calculations. Note that the "first" digit of the bareode will be stored in elemento of the array. (elve: "check" function takes two argument and it doesnt return any value) 2. Write a "check" function to calculate the check digit, and compare it to the final barcode digit. If the digits match, output the barcode with the message Hvalidated." If not, output the barcode with the message "error in barcode." Also, output with labels the results from steps 1 and 2 of the check-digit calculations. Note that the "first" digit of the bareode will be stored in elemento of the array. (elve: "check" function takes two argument and it doesnt return any value)