What’s the ++

Question

I keep seeing this...
int x = 3
int y = ++5
int z = y + x
Idk what the two ++ do

Answer 1

The increment operator.

Answer 2

But you can only use it on variables, not constants.

Answer 3

++5 is incorrect.

Answer 4

Actually your code will give error in 2nd line where u wrote ++5 . Here lvalue or expression not assignable error will occur.
You should write++x instead of
++5
First int x=3;
In next line u used pre increment
int x=++x;
Here x will be increase by 1 . And it will assign to variable y and the present value of x will be 4.
In next step
int z=y+x
Here z=4+4= which will give 8 as a output .
Hope you understood.

Answer 5

++5 not do anything, but ++x do.
++ is an increment operator.
++x (pre increment) is same as x=x+1
x++ (post increment) same as x=x+1;

Difference is pre increment, first increments it's value then uses. Post increment first uses value then increments..
For more, read about incrementstion operators.

Answer 6

++ means increament by 1 and -- means decrement by 1