What is difference between postfix and prefix

Answer 1

Post increment basically increments after using the previous value of a variable

Preincrement increments before using the value of a variable

a = 0
a++// a = 0
a // a = 1

b = 0
++b // b = 1
b // b = 1

There have been posts like these before. search in the Q/A's and check the below links.

https://www.sololearn.com/discuss/489143/?ref=app
https://www.sololearn.com/discuss/452566/?ref=app
https://www.sololearn.com/discuss/484591/?ref=app

Answer 2

post = after
pre = before

Answer 3

can u explain it
please