I'm not able to understand pre and postfix operators..please help.

Question

https://code.sololearn.com/cu3FyUrdvFVW/?ref=app

Answer 1

Pre-fix
y=++x
1. x=x+1
2. y=x

if x=1 then y=2 (first the value of x increased and then the value of x is assigned to y)

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Post-fix

y=x++
1. y=x
2. x=x+1

if x=1 then y=1 (first the value of x is assigned to y and then value of x will be increased)

Answer 2

https://stackoverflow.com/questions/7812178/how-do-prefix-x-and-postfix-x-operations-work