Values from Arduino Uno temperature and gas sensors

[SteveJG]

Welcome Hanan.

@Hanan_Blan

program to read to me the values ​​that come to me from the Arduino Uno and from the temperature and gas sensors

This discussion may help Hanan GAS SENSOR (my project is about gas sensor using arduino. but the problem is after i run the program it says "list index too large" so what should I do?) - #9 by Patryk_F

and

@Hanan_Blan

If the gas measurement increases more than 300
If the temperature exceeds 38

See Programming Your App to Make Decisions to learn how to handle conditional statements.