Having trouble on solving the following tasks

PaulS:

      if(ThermResist >= Table[2][1] && ThermResist <= Table[0][1] )

if(ThermResist >= Table[4][1] && ThermResist <= Table[3][1] )
     if(ThermResist >= Table[6][1] && ThermResist <= Table[5][1] )
     if(ThermResist >= Table[9][1] && ThermResist <= Table[7][1] )



Do you not see a problem with the 1st index in these statements?

The first statement should be comparing ThermResist to Table[1][1] and Table[0][1].

You mean something like this =(: -

if(ThermResist >= Table[1][1] && ThermResist <= Table[0][1] )
        Serial.print(Table[0][0]);
        Serial.println(" C");     
if(ThermResist >= Table[2][1] && ThermResist <= Table[1][1] )
        Serial.print(Table[1][0]);
        Serial.println(" C");     
if(ThermResist >= Table[3][1] && ThermResist <= Table[2][1] )
        Serial.print(Table[2][0]);
        Serial.println(" C");     
if(ThermResist >= Table[4][1] && ThermResist <= Table[3][1] )
        Serial.print(Table[3][0]);
        Serial.println(" C");     
if(ThermResist >= Table[5][1] && ThermResist <= Table[4][1] )
        Serial.print(Table[4][0]);
        Serial.println(" C");     
if(ThermResist >= Table[6][1] && ThermResist <= Table[5][1] )
        Serial.print(Table[5][0]);
        Serial.println(" C");     
if(ThermResist >= Table[7][1] && ThermResist <= Table[6][1] )
        Serial.print(Table[6][0]);
        Serial.println(" C");     
if(ThermResist >= Table[8][1] && ThermResist <= Table[7][1] )
        Serial.print(Table[7][0]);
        Serial.println(" C");     
if(ThermResist >= Table[9][1] && ThermResist <= Table[8][1] )
        Serial.print(Table[8][0]);
        Serial.println(" C");     
if(ThermResist >= Table[9][1] && ThermResist <= Table[9][1] )
        Serial.print(Table[9][0]);
        Serial.println(" C");