hello everyone

i came across the following 'for' statement in a code:

for (pass=rx_str[ptr1+1]; ptr1<size && pass; ptr1++) {

i'm curious about about the 'ptr1<size && pass' of the statement as i
have never come across a for loop layed out in this way.
1. is this valid?
2. if so, is it the same as saying 'ptr1<size && ptr1<pass' ?

Thanx in advance
Seyi

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