hi im looking for the comand which says if some condition is true and some other condition is true than do something. thanks.
if(a == b && c == d)
{
 // do something because condition 1 AND condition 2 are both true
}
thanks
See more about it here: && - Arduino Reference
You can also write it:
if(a == b) {
 if ( c == d) {
 // do something because condition 1 AND condition 2 are both true
 }
}
which can potentially give you more flexibility in case you need an "else" clause.