allora ho quasi finito ....

il tutto occupa 25.416 bytes per 6 cifre 7 segmenti adesso vorrei provare a smagrire con i cicli for ma purtroppo non so come adattarli

al programma (ho tentato ma nulla)
esempio una sequenza del genere e possibile fare un ciclo for unico? o piu cicli for, e come ?
C1= map(analogRead(A0), a, b, c, d);
//Serial.println ( C1, DEC );
if (C1>= 100000 && C1<= 200000) C1=C1-100000;
if (C1>= 200000 && C1<= 300000) C1=C1-200000;
if (C1>= 300000 && C1<= 400000) C1=C1-300000;
if (C1>= 400000 && C1<= 500000) C1=C1-400000;
if (C1>= 500000 && C1<= 600000) C1=C1-500000;
if (C1>= 600000 && C1<= 700000) C1=C1-600000;
if (C1>= 700000 && C1<= 800000) C1=C1-700000;
if (C1>= 800000 && C1<= 900000) C1=C1-800000;
if (C1>= 900000 && C1<= 999999) C1=C1-900000;
if (C1>= 10000 && C1<= 20000) C1=C1-10000;
if (C1>= 20000 && C1<= 30000) C1=C1-20000;
if (C1>= 30000 && C1<= 40000) C1=C1-30000;
if (C1>= 40000 && C1<= 50000) C1=C1-40000;
if (C1>= 50000 && C1<= 60000) C1=C1-50000;
if (C1>= 60000 && C1<= 70000) C1=C1-60000;
if (C1>= 70000 && C1<= 80000) C1=C1-70000;
if (C1>= 80000 && C1<= 90000) C1=C1-80000;
if (C1>= 90000 && C1<= 99999) C1=C1-90000;
if (C1>= 1000 && C1<= 2000) C1=C1-1000;
if (C1>= 2000 && C1<= 3000) C1=C1-2000;
if (C1>= 3000 && C1<= 4000) C1=C1-3000;
if (C1>= 4000 && C1<= 5000) C1=C1-4000;
if (C1>= 5000 && C1<= 6000) C1=C1-5000;
if (C1>= 6000 && C1<= 7000) C1=C1-6000;
if (C1>= 7000 && C1<= 8000) C1=C1-7000;
if (C1>= 8000 && C1<= 9000) C1=C1-8000;
if (C1>= 9000 && C1<= 9999) C1=C1-9000;
if (C1>= 100 && C1<= 200) C1=C1-100;
if (C1>= 200 && C1<= 300) C1=C1-200;
if (C1>= 300 && C1<= 400) C1=C1-300;
if (C1>= 400 && C1<= 500) C1=C1-400;
if (C1>= 500 && C1<= 600) C1=C1-500;
if (C1>= 600 && C1<= 700) C1=C1-600;
if (C1>= 700 && C1<= 800) C1=C1-700;
if (C1>= 800 && C1<= 900) C1=C1-800;
if (C1>= 900 && C1<= 999) C1=C1-900;
//Serial.print ( " C1 ");
//Serial.println (C1, DEC );
//Serial.println ( " ");
if (C1>= 10 && C1<= 20) C1=C1-10;
if (C1>= 20 && C1<= 30) C1=C1-20;
if (C1>= 30 && C1<= 40) C1=C1-30;
if (C1>= 40 && C1<= 50) C1=C1-40;
if (C1>= 50 && C1<= 60) C1=C1-50;
if (C1>= 60 && C1<= 70) C1=C1-60;
if (C1>= 70 && C1<= 80) C1=C1-70;
if (C1>= 80 && C1<= 90) C1=C1-80;
if (C1>= 90 && C1<= 99) C1=C1-90;