sketch_jan23a:94: error: base operand of '->' is not a pointer

       adc0->save(adc0);

           ^

sketch_jan23a:95: error: base operand of '->' is not a pointer

       adc1->save(adc1);

           ^

sketch_jan23a:96: error: base operand of '->' is not a pointer

       adc2->save(adc2);

           ^

sketch_jan23a:97: error: base operand of '->' is not a pointer

       adc3->save(adc3);

           ^

exit status 1
base operand of '->' is not a pointer

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