Why b variable is 11 not 10?

Question

https://code.sololearn.com/cEdy5Khfr8Ek/?ref=app

Answer 1

b = 12 + a-- / ++c - --a;
b = 12 + 3/6 - 1 (since a-- = 3 and a reduce to 2, so --a becomes 1, while 3/6 is integer zero.. )
So, b= 12 +0 -1

Answer 2

Gaurav Atreya But a-- shouldn't implement after = operator implements

Answer 3

No, a-- doesn't implement till the value of a has been used, that is occurrence of a-- not =

Answer 4

Thanks